I'd ask you to reconsider the conversion to rectangular quads, even assuming that it could be done with little fuss. There's a reason that automakers got away from them many years ago, and it has less to do with design constraints, and more to do with the simple fact that the lights themselves aren't worth a crap as far as concerns light output. The automakers generally took the perfectly good round duals and quads that were in place for so many years, and changed the design to the rectangular quads, in order to make their vehicles' hoodlines a bit more swoopy. Why Volvo jumped on that bandwagon remains a mystery. It soon became apparent that these square-ish bulbs changed the light beam so much as to be more hindrance than not. Got rid of them quickly enough. Volvo was smart enough to go back to it's "safety first" roots and incorporate the euro beams in an Americanized format with the block-style big beams. There's a reason for it.

Short answer: You won't be happy with the limitations that you place on your lighting if you go back to the dinosaur rectangle quads. (Are they still even available at reasonable cost?)

B

They will bolt on I believe but the fenders at least where the turn signals fit is different between those years. So the fenders would have to be replaced and maybe the hood.

You might just consider getting e codes it would be a much easier fix.

Dan