Also forgot to mention Rick said that the TB opening gets most of the increase...substantial increase in opening But for the 3L and FI guys running 65mm TB's it will work well when port matching on a SVT UIM that is. Which by the way Rick also recommended port matching for the best results. Basically put the gasket in place and scribe around the opening then dremel away the excess material to the edge of your scribe line...port matched.

Scott

Scott 2000 Contour SVT #1464 Mustang Dyno: 171.6hp/145.3lb Dynojet Dyno: 171.1hp/148.9lb 1989 20th Anniversary Turbo T/A "Indy 500 Pace Car" #1376 of 1550 All Original, 46k with a few mods 2002 F150 SuperCrew