I just finished installing my 91 suburban grille conversion on my 88. It was a pretty long process; I logged about 10 hours doing the whole conversion by myself. I used the original wiring harness and spliced in the 91 pigtails- I soldered the splices, used heat shrink tubing and then electrical taped them; they SHOULD hold up well. Since I had to pull the radiator and had the core support available, I installed a B&M tranny cooler as well and changed the tranny fluid/filter. I was less then impressed with the taiwanese repro grille and headlight bucket crap. As a matter of fact, I was pretty disgusted. I had to dremel quite a bit around the grille to even get a decent fit, and the buckets and grille don't line up very well. At first I thought it was just how it was stock, but when I test fit the original trashed GM pieces, they went together a lot better. I would have to recommend to anyone wanting to do this to go OEM grille and buckets, even if it's used. Here it is! I could SURE use the grille emblem if anyone has one lying around. Please PM me; I will buy it from LMC truck otherwise.