ok.i thought i put in here that
i found out somewhere else this:
429/460 heads intake valve size is close
to Cobra Jet valve size.
both intake & exhaust ports on 429/460 are big although there was something about
working on exhaust ports.
it may not be tons of info but it is something.
regarding trans i don't think it's a real big deal.
you're acting like i'm taking corn that could be
used to feed starving people around the world
to make bio diesel. ( that's one of my pet peeves. )
Have A Nice Day!