Need help with front coil springs which is the best?

I'm trying to find out what front spring would be the best for my 1971 Camaro with a 383 an automatic transmission and A/C.
I'm looking at Advanced auto parts and they have a couple if different numbers.
TRW CS5276 http://www.partsamerica.com/ProductDetail.aspx?mfrcode=TRW&mfrpartnumber=CS5276

And TRW CS5278 http://www.partsamerica.com/ProductDetail.aspx?mfrcode=TRW&mfrpartnumber=CS5278
What is the difference in the two?
What one is the best?
I'm looking for something no more than 100 buck keeping the stock ride height that will give me a nice ride and at least the same performance of a Z28.
Thanks,


Chris G.

Both of those numbers (links won't work for me) are TRW numbers, they do pretty much OEM kinda stuff, usually with a lifetime warranty which is nice. I don't know how good Advance's online catalogs are, but if you go in-store, they also sell Eibach and several other brands. They just have to look it up in their catalog rack. :)

Also, TRW's website is very informative, but if it isn't showing you what you need, call Advance and have them cross the TRW #'s to Moog #'s or other brands and check it out there, too. Might find out more info that way. Good luck!

Here is the info I found on them.
TRW CS5276 Front; Regular; w/AC; Set of Two $61.48
INSIDE DIA.= 4.09 in.; BAR DIA.= 0.656 in.; FREE HEIGHT= 17.05 in.; SPRING RATE= 303 Lbs./In.; LOAD= 1983 Lbs.; LOAD HEIGHT= 10.5 in.; END 1= SQUARE; END 2= TANGENTIAL



TRW CS5278 Front; Constant Rate; Regular; After 2/10/70; Set of Two; w/Air Conditioning $93.97
INSIDE DIA.= 4.09 in.; BAR DIA.= 0.656 in.; FREE HEIGHT= 17.05 in.; SPRING RATE= 298 Lbs./In.; LOAD= 2083 Lbs.; LOAD HEIGHT= 10.5 in.; END 1= SQUARE; END 2= TANGENTIAL
Thanks,


Chris G.