1989 Ford Mustang popping

I have an '89 lx w/ a 302, 40 over w/ trw forged pistons, eagle forged rods, ford racing crank, ford racing e303 cam, trick flow twisted wedge heads, trick flow upper & lower intake, bbk 65mm spacer w/ bbk 65mm throttle body and a cold air intake, it also haves a msd 6al box, msd blaster coil, msd distributor, 24lbs injectors and 1 5/8 mac shorty headers, It runs terribly, cold start are hard it stalls and conks out. When it is running it pops out of the intake, and the power seems to come and go [img:f14d1d1b38]http://www.2carpros.com/forum/automotive_pictures/161275_mustang1_1.jpg[/img:f14d1d1b38]any suggestions would be greatly appreciated