I plan on putting ABS in my carb'ed, IRS, hydroboost-equipped MK3. I've done some searches, and I know that the earlier ABS pumps were stand-alone (no engine computer hookup) but had only 1 line for both rear wheels. I'd like to have separate lines for the rear wheels, but still have the stand-alone capability. My hydroboost unit comes from a 99 Cobra. Does anyone know what year(s) I should be looking for for an ABS unit? Any other "gotcha"s that I should beware of?