Help for a mutt truck needed

I'm putting an M5R2 manual transmission back into my 1960 F-100 after blowing up a T5 (not recommended for towing . I have all the pieces I need except for the separator plate between the engine and transmission. The T5 plate doesn't work due to the different radius for the starter and also doesn't cover the full opening.

Does anyone have one laying around that they would part with for a few bucks, or know where to get one cheap? I hate to go to the u-pull-it yard and yank a transmission and flywheel just to get this silly spacer.

 

You would think some salvage yard would have one just laying around. I would do some calling.