Hello, I was wondering which engine to get for a replacement. I am considering an O.S. 18 CV-R ABC. I know it's a good, reliable motor. I have the stock .15FE motor which puts out 0.56 HP @ 29,000 Revs. The O.S. puts out 1.35 BHP @ 28,000 revs. I know the biggger one is better, BUT, my question is will I see the difference in the performance. I hate to waste money on stupid things and I am counting on some opinions to use as a guide. Thanks!!!