right now i have a 90 5.0 with an old bottom end (120,000). i have gt40 heads, f303 cam, bbk fpr, full exaust (headers,catless h pipe, flows), roller rockers, zex 100 shot, 190 fuel pump, 24lb injectors, 4:10 gears, and some other stuff that I can't think of right now.

anyway, i still have the stock intake mainfold, throttle body, air intake, maf. I'm about to buy an intake manifold (trickflow track heat), throttle body (75mm), air intake, and maf.

am I going to see a noticable difference because its a lot of money and i want to make sure im putting the money in the right place
thanks a lot

 

youll notice a difference but you need to replace the stock tb and maf. the maf is the biggest restriction to the intake so as long as your running that you will always be choking the motor.