Hate to start another which engine is best but have a question.In multi-engine are trying to ID a twin I picked up.Not into small engines at all but it was there,Presently use mostlyOS Saito and K&B.Anyway this thing has small mounts even and OS 20 doesn't go into them but they have plenty of room will probably change as they are inverted so probably replace with side mounts for a 20s type engine.Due to an expected short life span hate to spend lot on engines!I know am a pessimist!Any way looking for RELIABILITY and low price would sacrifice preformance for these 2.Any suggestions?Never flown twins and seen enough to know necessity for reliable running engines.