I am looking into some new heads as the iron gt-40's just arent giving me enough flow for the kind of hp im trying to get.. I know I'm going to get about 60 people telling me to go with afr 185's but I just dont want them.. everyone around here uses them and I want something a little different. Does anyone on here use the TW heads? if so, can the stock pushrods be used with them? any piston to valve clearance issues ? I have a stock bottom end for now with a E303 cam.. in the next year or so it will probally end up with some kind of stroker kit (331 or a 347) at that time I'm sure I'll be swapping the cam out for a comp cams custom grind. Anyone have any idea of a hp increase I should expect to see over the gt-40's ? I dont really want to change the intake manifold b/c I like the motor to look as stock as possible.. they say the cobra intakes are good to 400hp? is this true? Mine has also been ported (upper and lower)

- Mike