I did this conversion years ago on a 90 Rangie Vogue SE with ABS as the pump was on it's way out. Instead of spending a small fortune on the ABS I ditched it, cost me bugger all (I had a 88 Rangie donor with non abs and used all the bits off that). I never had it engineered, put it through a roadworthy and nobody thought the wiser. I did get a comment that the brakes were really good though :D
Trav

