Thanks for the tips, much appreciated! To summarize this ( please correct me, if wrong )...
(1) Make a mounting plate from flat stock ( 3/16" or 1/4" I assume).
(2) Drill mounting plate, and bolt to stock floor brackets.
(3) Sandwich ( double-up ) the gear selector brackets to the selector shaft, and tack weld them for peace of mind.
(4) Run new B&M cable through the stock hole in the floor.
So I finished mine, PM me
If you want a link to a short video I made going over the install.
http://s866.photobucket.com/user/VenomGT-R/media/B40D17BC-E013-462A-B229-00CA35E38755_zpssxbv0ujh.jpg.html][/URL]