Easy to make one of these and fit it to eaither a 700R4 like this one or a Doug Nash / Richmond trans.
First the trans has to be in place and level
Next cut the pipe to fit the origanal crossmember spots and install the bolts and tighten
Install the trans mout and cut a square plate and drill hole to fit the mount and bolt it on
Then bend a coat hanger or some brazing rod to a shape that put the bend behind or in front of the plate, depends on room
Bend some dom or heavy wall pipe and trim to fit, why pipe you ask? because you will have 2 weldable edges at any angle lllll
Once fitted tack it all in place, tack not weld yet chucky!
Make sure you are good then add more tacks remove and weld in segments not one whole side then flip or you'll warp it.
A 110v wire welder can do this just fine..
Tadah! New mount you made all on your own!
I accept light beer donations thru PayPal
Drive line I knew my front half with a Muncie is 24 5/8 so I deducted the additional length of the Doug Nash and adjusted 1/2 for the longer yoke.
With yours I would take the stock length front for a power glide and deduct the additional length of the Richmond, richmond has this info with and without bellhousing