RE: Engine for Goldberg ultimate
Keep it light and put the OS in it would be my choice.. I had one built light years back with an old SuperTigre .90 in it. Bare in mind this engine went through heck in a P47 previously, and the carb was glued in place with JB Weld.... A good OS 91fx would be VERY nice IMO. I could knife-edge loop the ultimate with that tired ST90.