You will make plenty of torque with the TFS heads. Mine are ported, along with a heavily ported GT-40 lower. (Fel-pro 1262) On the dyno I was making about 275 lbs of torque by 2800 rpm. 310 lbs by 3400.
Thing is you have to buy good rocker arms and 6.700 inch hardened pushrods. You should get this stuff with any head though.
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1988 Mustang GT
12.0 @ 122
1992 BadAzz Wrangler
1993 Explorer
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