I can think clearer now its the morning, was a little annoyed last night at the prospect of having to buy/make new uprights! And as Headshot says 14 to 15's isnt a big change at all, and lower profile tyres would probably look better too! Just a shame as I already have a nice set of 14" alloys of my sierra - no doubt they'll shift on eBay though
Only issue now is the disc calipers but I'll cross that bridge when I get to it...
Cheers
josh