i was wondering if anyone has done something like this? picked up a lawn tractor from a friend with a hole in the side of the block. it has a 12.5hp briggs. i was wondering if anyone has put push mower engine in a larger engines place? i got a 6.25hp engine on a roached deck. seems like i can get a 7/8" to 1" adapter for $10. i have a feeling i know the answer but buying a new engine just don't seem practical unless it was super cheap. i figure it would only working in 1st or 2nd gear with such a small engine but you never know.