my 2000 v6 with the 5speed manual, has a custom cold air intake that actually works unlike the available junk, custom exhaust with no resonators and straight thru style canister mufflers, and a tune and it puts down around 230 to the wheels. then add my 80 shot of nitrous. and my custom flywheel/clutch setup. you can make the car quick. i dont know much about the autos and what can be done with the tunes with them. probably harder shifts and stuff. dont set your rev limit any higher than stock though or youll be like me and spin bearings from over revving. never had an issue in 6 years until i raised the rev limit. my v6 on the spray was as fast/faster than any other car on here until quik did his supercharger. but i could launch hard on drag radials and get good 60fts. sure no race car but surprises plenty of dbags in cars that think their gonna walk you. check my boardom thread for some old vids of mine.
you can get a little more but not likely youll drive as aggressively(destructively) as someone like myself so its minimal without n2o or forced induction