Second reply from Georgehere.....Albert, went to the plans again and measured the prop back plate to the firewall...4 1/8".....Measured my Saito 72 in the plane and it is 4 7/8"...When I put in the 56 I did not measure, just wanted clearance for the carb and fuel lines....it just came out that way. The 72 bolted in the same holes. Thought I would give you this additional info.
George.....Orlando, Fl [img]i/expressions/face-icon-small-smile.gif[/img]