Check the lower frame rails, especially the left side, for cracks or splits the run along the length of the rail.

I'll look good tomorrow. I recall at least the bottom rails that ride under the rear end area on the under side of the tubing have seen some attention...

Hank Lower did run an Oz chassis in the mid 80s. It took a hard hit into the inside wall at Butler and needed a new front clip.

I drove an Oz car for McFarland & Williams in the early 90's
It was a damn good car won many A features with it.
Bobby Layne

thanks for the info Fish! Much appreciated! Do you know who he sold the car to?

Speedwrench, I checked out the rails. the only thing I see is a patch on the side of the left bottom rail directly in front of the nerf spud.Also, there is a small patch on the underside of both bottom rails where it starts to kick up under the rear end..

Sorry. No idea.

You should be good then. If you are going to run the car hard you might want to make this part of your regular inspection routine.

I'm not sure if it was a design flaw or a material problem but some of the early OZ cars had a tendency to split the lower left frame rail. I'm not sure how far into production this went but later cars didn't seem to have this problem.

If the handling starts to feel funny or the car loads funny in the corners check the rails again.