Specs for 89' 3.8 N/A

I'm a gearhead and have a couple of other toys and originally bought this 89' Cougar with ONLY 48K as a daily driver...but going from a 500hp LS1 Firebird to this has killed me. I know nothing I do will give me that power w/the fuel economy I want, but I'm looking for some good proven bolt-ons, warnings, etc.

Also, I'm looking to IMMEDIATLY replace the stock radiator with a better one and Electric fans. If anyone knows of a source for good radiators for this vehicle please let me know.

THANKS!!