Any difference in the Jacob exhaust brakes (other than the electronics and no vac pump on the '03) from an earlier one? I have a chance to pick up an older style from an air brake engine (I will install a compressor) Just didn't know if the conncections to the turbo and downpipe, retarding power etc would be the same. Any info is appreciated. I mostly want this brake for engine warmup as I don't pull heavy trailers in hilly areas to much. I realize it will be a fully manual in operation. Thanks<br><br>Paul<br>'03 HO/6spd quad sb

 

I believe the bore size is different that previous model years.<br><br>Casey