I bought an 87 gt and later found out the previous owner took the ho motor and stuck me with the bs 150hp non ho motor from an 88 t bird with e6 heads. Well he did a complete ho conversion. Upper lower intake, cam, tb and exhaust. Now my question is, what were the pistons in the 88 t birds 5.0? I got some gt40 heads and want to make sure i have enough piston to valve clearance and/or it has valve galleys.