Well I thought of the aluminum heads but the spark plug holes are all angled, Will the stock logs work with the Aluminum heads? I am done with the dual exhaust. I just bought a Waldon stock single exhaust system. having a convertible, The drone and being loud is over for me. My originals need a valve job and probably new valves and springs. I called around and the basic 3 angled valve job is $530! I rather spend a bit more and buy new.