Classic Tech
Sorry, I'm kinda a newb when it comes to this stuff. I've got a 72 Fastback 351c 2v FMX with the factory 2.75 geared 28 spline 9 inch in the back. I'm wanting to swap the 3rd member for one with a lower gear and a limited slip. However, if there is one for 31 spline axleshafts should I be...