Your car should make 320 at the wheels with those heads added.
For the record I have not had a problem with any TW heads that I have torn down.
Also, not to flame but Jim Belle knows as much about TW heads as i do nuclear reactors.... NOT MUCH.
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91 coupe, SVO block 380 windsor, Brodix Neal heads, Super victor spyder intake, 90mm Accufab, 160 lb. Bosch injectors, D2-R procharger, Dynamic powerglide, 4500 stall, 9" rear, Speed Pro injection. 1047 hp at the wheels on Dynojet dyno with 23 lbs. of boost.
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