basicly what is the difrence in the 2 rears and can any of it be swapped to the new rear?

A local shop said the think all you have to do is use the orginal brake lines with the car

(Putting a Traction controlled rear on my non-TCS car)

 

the non traction control cars have the ABS sensor on top of the pumpkin, where as the traction control has one on each end of the the axles. I would guess you could use either in your car, but you will lose ABS function for the rear brakes,may even throw a SES, not really sure.

 

well can i take the ABS sensor off my pumpkin and put it on the rear that didnt come with it?

 

No, because the TCS axle will not have the reluctor gear on the differential carrier, and that's what the sensor on the pumpkin reads in an ABS-only car.

The TCS axle has a reluctor gear on the end of each axle, and a sensor on the backing plate on each side. The number of "pulses" on an end-of-axle reluctor/sensor is different that the pumpkin sensor, because of the huge difference in the diameter of the reluctor gear.