20v(t) head on MC motor?

[Ken Keith]

OK, I'm pretty sure someone here has already done this, or is doing this.  I seem to recall that someone was bolting on a 20 valve head onto a 10v block.  IIRC, this may require custom pistons due to the compression ratio of the stock combination.

Can this be done?  Was there a difference between AAN and 3B and the n/a 20v head (I forget the engine code for those) (okay, I looked it up, 7A)?

I'll do some archive-diving too to see what I come up with.

How about this specific question.  Can a 3B block be replaced with an MC block, keeping everything else 3B?  Some of you know what I'm thinking.  This is just for curiosities sake...

Thanks,

Ken