I have a 99 GT 4.6, I have FlowMaster Exhaust, K&N Intake, Pulleys, I just bought the SCT Tuner, have not used yet, I am waiting to get the Throttle and Plenum.

Any advice if I should get the 70mm or 75mm and what brand or combination of brands? I plan on getting cams and heads withing the next few months, and eventually supercharging, but that will not be for a year or so.

Any suggestions?

 

Go with the 75mm it will couple good with your up coming mods!

 

Definately get 75mm with those mods coming. Most brands are almost the same (Acufab, C&L, Trick Flow, BBK, etc.).

 

Go with 75 mm and I read an article that Accufab gives the most hp and torque but they also cost the most. I am happy with my accufab tb/plenum.

 

go with accufab you wont be let down

 

ive seen alot of people recommend the accufab TB and C&L plenum

 

love my accufab one

 

I've never had a licks worth of worry from my BBK 75 TB to this date. When I was N/A, I liked my C&L upper.

 

will your gas millage increase or devrease with this modification?

 

https://mustangforums.com/m_1080031/tm.htm