i was under the impression that the stock T/B was 63mm on the inside. oh well, i replaced mine with a Ford SVO 75mm and it made a noticable amount of difference. if you are doing a straight swap then the 99 T/B will be fine. if the PI heads are going to be P&P, then you definitely want to go bigger. what about your MAF? just something to think about. good luck.
__________________
JV
98GT aka Holly
02 bullitt motor
jms performance chip - program 2
steeda tri-ax shifter
ford motorsport 9mm spark plug wires
accel super coil packs
pro-m 75mm maf
ford motorsport shorty headers
bbk h-pipe w/hi-flow cats - 2.5"
flowmaster american thunder cat-back - 2.5"
ford motorsport 3.73 rear end
ford motorsport 150lph fuel pump
kumho ecsta 712 - 255/40-17
|