well, if you're going to do all this and spray you are definitely going to need the basic fuel pump upgrade adjustable pressure regulator and bigger injectors. you'll only need the bigger injectors if you spray it. my setup right now is 12.1:1 arias pistons, stage 1 zex cam, i/h/e, msd 6a, aem regulator, and walbro pump. i run the pressure about 48psi and that is checked with the hose off. this is in a y8 with an auto tranny. you should check out exospeed for that cam you want though. there stuff looks good. i don't know if you have to worry about emissions testing but a dual carb setup on an obd2 year car will not pass. i don't know if i'd mess with the computer unless you were going to take it off the road. there just isn't enough you can do to them(since they are obd2) to risk it not being able to communicate with the tester. most chips just raise the timing which you can do yourself but won't need to really with the setup you're talking about, and then they can raise the fuel pressure which is better to have the regulator for anyway. i got a jetchip and i sold it and got a stock computer back for mine. it was a waste. hope this helps you on your way.