727 Floor Shift Conversion Help

Working on converting my brother's 68 Barracuda from a B&M Pro Stick cable shifter to a stock mechanical floor shift unit. Can't figure out the bracket and linkage on the trans side.

The car has a 318 and 727 trans and after further investigation, it looks like the trans if from a 75 truck (PK3736147 4416 6726). Anyone know if a 727 from a truck has different housing mounts or is different than a std A-body?

If mounted in the stock location, the pivot rod should drop down just in front of the speedo cable, but can't figure out where or how to mount a pivot bracket...