well, i personally like the trick flows, but as for something streetable down at 1600rpms, its not the heads, but the cam, if you use the tfs heads & intake on a stock motor, ive seen a guy run 12.7 with the stock cam on a 98 gt.
i am going with the trick flow.
later...
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1988 Mustang GT, T-5
3.08's, No Smog Pump (Shorty Belt), Dumps At The End Of Stock H-Pipe, K&N Air Filter (Stock Air Box), Removed air silendcer), 198.9 rwhp @4200 (235 Motor!!), 285 lbs-ft @2900 (336 Motor!!!).
My Stang
My Site (Not Done Yet)