I have been asked by a few people what is all involved in updating 93-4 LT1 hoses to the 95-7 configuration.. or using the 95-7 GoodYear hi Miler set, etc.
So here's some info:
There are a TOTAL of 11 coolant hoses...

I used the GoodYear Hi Miler set that is for 95-7 F body, which is a good kit but IS missing ONE HOSE..
The hose that goes from the 'lower 3/4" front heater line inlet pipe' to the 'heater water flow control
valve' by the water pump [that the '3/4" elbow' goes into, on the other side of that valve] is missing
from the 'Hi Miler Kit' [#15 hose on shoebox' 95-7 heater hose diagram]. I used, instead, a piece of 3/4"
'heater hose', cut to about 14 1/2" [the p/n for a GM replacement hose for that is: 'heater inlet front hose'
GM p/n 10146991 $32.29 GM list, [same p/n for 93-4 and 95-7]

Basically, there are:

6 'heater hoses' [ the 'heater hose assemblies', while slightly different for 93-4 and 95-7,
work OK for both 'configurations'.. I still used the hard pipes of my 93-4 'heater hose assembly'..].
You must leave the hose from the rear 'steam pipe' that goes to the radiator on 93-4 [see below in
shoebox' '93-4 radiator hose diagram' hose #4.. ]. This is actually half of the 95-7 'TB bypass
mod'. Do NOT do the 93-4 style TB bypass mod[which uses the hose barb connecting the
'bleeder TEE' to the Y in the 'Radiator Inlet Hose' [#14 in shoebox 93-4 radiator hose diagram]

2 'Throttle Body coolant hoses'[remove from TB do 'bypass mod']

3 'Water Pump to Radiator hoses':
a]Radiator Inlet Hose [different for 93-4 and 95-7 configuration.. see '2' below]
b]Radiator Outlet Hose [same hose for 93-4, and 95-7]
c]Engine Bypass Hose [same hose for 93-4, and 95-7]

To use '95-7 hose configuration' on '93-4' you need:
to CHANGE:
1]The 'heater outlet hose connector' [bleeder pipe] to the one without the ' tee' on it, that the
93-4 [#4 in 93-4 heater hose diagram below]HAS. The 95-7 one DOES NOT HAVE a 'tee'.. it is GM
p/n 10262478 $35.07 GM list.. about $17 from Jason Cromer.

2] The Radiator Inlet Hose: that goes from 'upper drivers side radiator inlet' to the 'upper
water pump drivers side outlet' [GM 'Radiator Inlet Hose' GM 95-7 p/n 10261148 $21.39 GM
list ] Hose #14 in shoebox 93-4 radiator hose diagram has a 'WYE' in it for the TB that you DO NOT
want, or need, for the upgrade. The new hose you are getting [#14 in 95-7 radiator hose
diagram below]does NOT have this 'wye'.

3] Throw away hose #9 in 93-4 'heater hose diagram' below.

The 'heater hose assemblies', while slightly different for 93-4 and 95-7, work OK for both
'configurations'.. [ I used my 93-4 'heater hose assembly' hard pipes..]
You must do the 95-7 TB bypass mod, which is actually already DONE on 93-4 if you do this
conversion[ it's the hose from the rear 'steam pipe' that goes to radiator on 93-4 [see below
on shoebox' '93-4 radiator hose diagram' hose #4.. this is actually the same as what you do
for the 95-7 bypass mod ], Do NOT do the 93-4 style 'bypass'[which uses the '3/8" hose barb'
connecting the 'bleeder TEE' hose #9 to that Y in the 'Radiator Inlet Hose']
The rest of the 2 configurations are basically the same..

I prefer the 'late' style due to:
It gets rid of that funny Y in the 'Radiator Inlet Hose' and also the ' tee' in the bleeder pipe..
Makes a neater TB bypass mod [no 'hose barb', etc]
Allows use of better hoses[ Hi Miler, or silicone, etc]

Use the following 'shoebox' site hose diagrams for reference, [study carefully]:

93-4 hose config:
http://shbox.com/1/93-94_hoses.jpg
http://shbox.com/1/heater_hoses_93-94.jpg

95-7 hose config:
http://shbox.com/1/95-97_hoses.jpg
http://shbox.com/1/heater_hoses.jpg

Hope this helps anyone that wants to do it.. And thanks, Rob, for making the diagrams available!