so check this out-
here we have the chevy astro 5-speed next to a 115 iron 4-speed. Ive thrown the MB shifter in there with the shift rods to show just how the location of the shifter itself is the big issue with just firing any RWD 5-speed out of dozens of vehicles in one of these MBs
Super inaccurate measurements, but look how the MB shifter is around a foot behind the actual box, and the chevy transmission shifter is actual about 5 inches forward of it. (they are both at the same line in front on the table) In this configuration, if you put the basic chevy box in an MB car, the shifter would be in your ashtray, or climate control
You can see from this side how the chevy 5-speed shifter handle is about 10 inches over to the driverside of the tranny through the astro-specific whoseawhatsit piece-
HOWEVER, here is my favorite pic- If you rotate the shifter extension on the chevy box, it puts the handle in
almost the right place. There is no doubt in my mind that the correct attachment is available for some application that moves the shifter to the rear over the tailcone, or is customizable, making this type of chevy 5-speed that is common for camaros or something like it a possibility in an MB body.
The trick is finding just the right old domestic or asian car that moves the shifter back in some way right over the end of the tailcone. I know from some other threads if you are buying a rebuild T5, you can buy pretty much any kind of extension you want, in multiple lenghts, but thats big money.