The 70mm TB on a stock 4.6 adds about 1-2hp in the real world. This said, the Duratec flows a lot more air for its displacement than the 4.6, so it is possible that it may get a few more hp than that (especially since you already have the 80mm MAF). To get any real gains with a bigger TB, you'll need forced induction. Hmm, guess Mark should try that out, eh?
\'94 Cobra #4963/5009, black on black, not quite stock
Formerly owned a black '00 SVT, #1972
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RIP - Ray "Old Fart Emeritus" McNairy
