I us island 4x4 mostly as not far from me prices are pretty good and know what there talking about most of the time so check them out
Had bripart doors off them looked ok and fitted fine had a lot of Brits bits been lucky had no problems
I used standed twin exhaust manifold and disco down pipes and center section which takes a lot of messing to fit mainly because of cross member then finihedf with a stainless P38 Piper back box sounds great
Just doing a series 3 was petrol converted to diesel 20 years ago never finished I got it sold engine on eBay bought V8 and fitted with lt77 box was a pig to get right hopefully worth it