Update:

Fixed the parking release handle on my SL.

There are 3 Phillips screws just below the plastic dash / top of the carpeted knee bolster. ( 2 on the left 1 on the right of the column. ) Under the dash where the carpeted knee bolster hits the hard plastic hush panel, there are ( 2 ) 5/16" / 8mm bolts.

The knee bolster will drop down and pull off at this point. Be sure to note how the bolster fits into a slot on the hush panel. ( The hush panel can remain in the car. )

The release cable has a disc formed on the end. The handle has a hole and slot for the disc to lock into. ( Think bicycle hand brake , some throttle cables ) Pull the release handle out about 3/4" , hold the cable, push cable to the slot and pull down, then pull the handle out.

I ended up welding a 3/8" wide 1/16" thick steel " ? " mark to the tab, works fine.