steve: Thanks! Looks like a good discussion is brewing over there. I read the PDF that petertha posted and that is exactly what I was looking for! So it seems there is a compromise with all radials. Nice to know. I made an account with HMEM so I'll be posting some things over there.
dynosor: yea I want all the cylinders/ pistons/ conrods to be the same length. I guess I'll have to compromise with the BDC/TDC.