The XJ VDP SC had any kind of positraction or limited slip differential? I just did a full throttle start with traction control off and got a smoky burnout with a long black line coming from the passenger side only. I'd prefer two long black lines.

 

bob

 

Beating a dead horse? Haha! But what's the answer? I don't want just one wheel drive. It's not a Ford Torino. Is something worn out or do I have to go aftermarket to get things hooked up?

 

Open diff, not Limited Slip, anti slip managed by TRAC and brake system.
You want an LSD the only one I know of is the Quaife unit, direct drop in. It's an atb diff (automatic torque bias) not friction plates so it behaves in a diff-erent way.