AFAIK process west are a Bar and Plate cooler?
Its a never ending debate, but, I prefer tube and fin. Also, the process west cooler is 1495, plus CAI for 305 so 1800$. Not much cheaper really.
Personally, you have such a complete car, it would be a shame to take shortcuts.
Get a top quality FMIC, I would suggest Trust, HKS, ARC....If you want a custom job it will cost alot more I think but PWR do great cores. Getting someone to do the fab work would be expensive though