Boring mod which should help with on track steering rack/electric assist motor temperatures. I personally have never had any issues with the steering rack even with ambients over 100°F at VIR. A tighter circuit with more turns and less straight may benefit. This is a GM part and fits perfectly on any ZL1 (possibly SS cars also). It is provided with ZL1 1LE cars in the trunk ('19 & up I think). Easy install with no problems. Coronavirus boredom made me do this today...
Pics below with GM part#84669205 approx $95. Part # in pic must be the instructions part #...sorry. The parts propped against the brick wall are the originals which almost completely close the area around the rack.
Another post with better pics is here:
https://www.camaro6.com/forums/showt...php?p=10495348