I know a few people that have opened them up with a dremmel. I was going to do mine, but I have enough other work already... I let the pro do it for me :biggrin:
Whoa... 50mm??? are you kidding me??? holy crap dude!!!
OK... so next question... when is the ID of the headpipe/manifold too big for a specific engine?
I just found out not long ago... pulled my pipe off and I have the old style. Mine is going out to Chucky tomorrow for head pipe porting and exhaust manifold boring...
I also heard that the smaller ID head pipe/manifold also robs your motor of some 5-7 hp... true or not :dunno:
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