Have just ordered the A-body trans mount, which will fot the auto crossmember I have purchased for the swap (Brewers part # TC040), but is 5/16 shorter than the current mount I have (Mopar part number 2533 145). It will hopefully allow me to adjust the geometry of the trans+OD unit, which is currently sitting up WAAAAY too high in the tunnel. Looks like ill need almost 3/4 inch just to make it fir at the moment, let alone clearance it form the tunnel.
Hoping the shorter mount will allow me to see-saw it down a bit, and get the clearance required.