I've got to replace an engine we blew up on an old sears rototiller. I can get a Briggs 5hp IC for about $200 and It seems like a perfect fit. Here's my question. The old engine doesn't appear to have a gear reduction/output ratio reduction. However, a Briggs 5hp IC with a gear reduction is about $50 more and the catalog says "great for tillers". What do you all think? Should I replace it with a non ratio reduction output 5hp as appears to be on there now OR spend the extra for the other engine? Thanks for the advice in advance.