Reims C150 Aerobat
Pilot Var, just a bit of advice from an experienced parts supply man.May be worthless in yr situation,but, I would recpmmend engine replacements being a Lyco 0-235L2C instead of a Cont 0-240.Parts would be much more readily available and most probably cheaper.The L2C was/is used in C152,Piper PA38 Tomahawk,Beech 77 Skipper and a Grumman trainer from memory.The biggest problem that I have seen over the last 50 years in spare parts is that as these models are phased out of production,then the parts get harder to procure and normally more expensive than currently available engines.I am pretty sure Superior make a lot of 0-235 parts,which keeps the manufacturers prices on a par,whereas the 0-240 is a fairly rare engine with regards to the number still in service and Cont are the only source of parts (if they still make them).
Also by fitting the 0-235 you basically have a C152,the engine being the main diff between the C150.
Hope my advice is of some use and good luck
Glen Beard,Australia