I have been running a s475 for almost 2 years now and I like how it drives but it has alot of shaft play and needs rebuilt. I have been thinking abut running a 6 blade s478. Im working on building a motor and the goal is to make 1000 on fuel and more on spray but don't know if it will be up for the challenge I know it will be better for me now but need something for down the road don't want tokeep spending money on a turbo.