Check the fountain powerboat owners group on facebook. There is a guy on there currently with one for sale. Full staggered, 600's with stage 4, and imco scx's.

Phase 4 Drive builds from All American Drive on ours, perform well and are holding up much better than stock. https://www.allamericandriveservice.com/hi-performance

Look up Chad Combs on Facebook. Good friend of mine with 38 stagger, 600sci Stage 4, SCX upper, Sportmaster lowers. 115mph with some left. He did put a 1 inch spacer in , so some custom parts had to be made. Jeff Hoefling at Lively Machine in Evansville made the coupler and studs.

This one...

You might consider a drive guardian. Call the manufacturer and the president / inventor will discuss whether or not he thinks that it can help. There have been some interesting threads about them. Do a search for them.

SCX,s for sure anything else is just bravo gear sets , put the standard SCX,S on my 42 when they first came out with Young 980,s then went to the -4,s 6 shaft,s cleaver,s when they came out .

All American Drive will give you a full two year warranty for up to 700HP and one year for 850HP on their Ultra drive if you run a DriveGuardian. And their warranty includes parts, labor AND shipping as long as you didn't hit something or run it aground.

https://www.allamericandriveservice.com/ultra-series

GF?