« Reply #1 on: July 14, 2012, 07:50:04 am »
a head is not the sort of thing you want to do this to yourself if you have to ask the question.
I wouldn't get it done anywhere that hasn't done specifically 4 valve turbo heads many times with success. Its different than a normally aspiriated domestic head.
Sure removing some casting flash etc is ok, but actually changing shapes needs to be done by someone who knows the head.
As well, until you are making well over 500 awhp on a Mustang dyno, there is no real need.
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