I was going to start cutting the original mounts and brackets off my donor rear end. My donor axle is from a 1984 Pontiac Trans Am. The rear axle conversion kits, listed in product catalogs, lists the kit for any axle with a 3" axle tube. When I measure the tube, I believe it measures 2-1/2" or maybe 2-3/4", I'm pretty sure it's not 3" that the conversion kit suggests. Always thought measuring across a tube to be a pain in the [censored]. Is a 3" axle tube exactly 3" or just close?
