Boost for 12's?

Well you do have the 4v which responds a bit better than our 2vs. you still have many mods you can do like gears, tb, tuner and or dyno tune, headers and cams.
IF I had your car I would try to get as much hp as i could NA and then see if thats enough. I know someones gonna say that there is no such thing as too much but a 4v NA with full boltons has got to be pretty fun. I dont think you would be to far from low 12s with full bolt ons and some good tires
 
Just save the hassle of cams and blah blah blah...just do the blower, you'll enjoy it alot and if you don't you can always sell it! Basically, if you're not wanting to keep the car for long stick with boltons and just leave it HOW IT IS...if you wanna keep it forever/long then go with the blower.