whiteredblabe Graeme How power power are you looking at for your car? Which trans are you looking at? what are the gear ratios? Big block or Small block motor? A Jag stock rearend has limits for HP and torque.
About 425-450 for either.
What size tires are you looking to run? The 2.88 jag is the weakest and smallest gearing of the rearends. Unless you plan to run 150 mph on the autobond a T-56 with double over drive is a waste of money.
This will also lug the motor at cruising speeds which hurts the bottom end unless you are running a diesel. A trans with a 3.00 first gear and 2.88 rear ends ratio will work out to about the best. IMO you would be better with a 3.07 or 3.31 gearing and a superstreet richmond trans with a 2.87 first gear and .78 over drive. With the 2.88 gearing, NO SLICKS, or AUTOCROSS GUMBALL TIRES. You will twist the stub shafts in the carrier. Been there done this.
I now run a chromemoly Jag rear with 30 spline carrier and shafts. My custom up grades are good for 600/600 HP and torque. If you are looking for more power, I quick change or Franklin rearend would be the next place to go. Over build the car, this will prevent breakage.
Rick L