What are these M10 holes for?

[BlackZR1]

Originally Posted by Kevin

If you were looking to get a frame stiffener I'd go with https://www.vette2vette.com/?q=produ...r-bar-system-5

I have one in the garage, just need a lift to instal it

That's a nice kit Kevin. Looks well made. A bit pricey though.
Description says "does not require any body modifications to install. The system bolts to existing mounting holes with the supplied hardware"

Roger