I forgot to update this. I've beat the stock engine up several times now on road courses. DSS totally reworked the axles and they've been solid. Mine were an older design and are now updated. It has rained the last two times to the track so only the road course was open. I'm going to Watkins Glen for two full days of lapping it next week so I may kill it before I make it to the drag strip. I have over 100 drag hundred passes worth of full throttle pulls on the road course on it and I've been revving it pretty high and sliding it etc.
The heads are not stock. They're ported and I have upgraded cams and gears we degreed.