My garage floor has an odd slope that I'm trying to accommodate for when putting it on jack stands.

I'm looking to confirm I can use the pinched metal joint under the rocker panels as my level reference for front to back....IE, if I make the red line in the image level, I'm good.


I'm using the rear diffuser/bumper to level left to right.

Is that correct?

 

I think that is likely good enough for what you are doing.

 

Yes what he said ^