wow .. that was a quick answer! thanks.
sigh, that was what I feared. i'm ok with a little machine work, but moving the holes for the head studs ... i'm not sure i will do this on a super good 3.0 block.
But have you seen the prices for a set of 98mm mahle cylinders? used or otherwise.
Wow .. and there are many 964 sets for sale out there, at a quarter of the price!
so I just thought.......