Long story short, I didn't want to ruin my new GM pump so Dwayne(96capricemgr) gave me one of his b-body cores and I adapted it over.
The heater hose is smaller than an f-body pump so I heated the area around the steel line and pulled it out. If you look at the photo there is a bushing in there and that was due to me using junk cutting fluid for the 1/2 NPT threads so.... I took it to the guys in our machine shop and they bored it out and we then tapped it for a 3/4 NPT. This is the absolute max as there really isn't much material left. After the 3/4 NPT to 1/2 NPT bushing was installed , using red lock tite, I installed the fittings I got from Performance Stainless. It is a 1/2 NPT to a 3/4 hose barb fitting. You can also get them in various lengths which is needed for the heater hose.
Next, I tapped the boss on the b-body pump where our oil cooler hose attaches. Again, this is also a 3/4 hose so I tapped the boss to a 1/2 NPT.
The final thing to do was to heat the steel tube by the t-stat housing and swing it straight up. I still need to cut the tube shorter and flare the end and install the temp sensor in the pump.
Here is a pic of the finished pump:

 

Seems like an F core, or heck, even a new aftermarket F pump, would have been cheaper than the machine work.

 

He did it at work, not so expensive.

This guy is an artist with a TIG.