The biggest problem in getting it 'just right' will be to find a genuine LB front pad. It is possible to modify a front pad to incorporate the minor differences alluded to by jm - but the real item would be oceans better. I managed to get hold of a genuine pad from the late Bruce Gorton for one of my 90L rebuilds. It came out so well I kept it for some years (until another forummer prized it out of me!).
ATB