Sorry, been kind of busy.
Yes, everything shows the actual mount is the same place between the 500 and 518.
The part of the hoop that runs over the top of the trans that does NOT sit flush with the floor pan is what I had to trim off.
I left the two straps that are welded to the hump.
Here's a pic that shows where I trimmed it off.
I have welded in 2x3 steel subframe connectors with an .085 wall thickness, so taking a little support away from that didn't bother me.
View attachment 1715014761
