My buddy has a 20' Chappy with a Yamaha 5.7 (chevy) and Yamaha sterndrive. The motor popped and we are ready to stuff the new plant in. We were looking at the drive plate and the splines are real sharp and worn. The input shaft splines on the lower unit look new. Where the heck can I find a drive plate for a Yamaha outdrive? Can I get the original one re-hubbed? What'd y'all think?