I should probably mention for those interested that I am using a Gennie Shifter on the floor called a "Lo-stick- mid-mount" (
http://www.gennieshifter.com/shifter-lostik.php). It will allow me to change out sticks and knobs on the fly and has a lot of adjustability for final location once mounted. The hole for the shifter ended up right behind the firewall to floor body flange. Which I like since it will push the shifter forward a bit. My last shifter (unknown but believed to be Mr. Gasket style) sat further left and rear and was always in the space my knee/thigh was trying to occupy. The knob would also be up against the seat when in drive. So I'm glad I will be able to better position the shifter.