Thanks guys - after taking a good look over all of the pieces I certainly have no complaints about the apparent quality... the weight of the vinyl SEEMs good to me, although once again I don't have much to compare it to. Definately doesn't feel 'flimsy' or easily tearable by any means.
My plan was to have a shop install these covers for me - honestly I hadn't even considered installing them myself assuming it was a job I could easily mess up!
That being said - I haven't ordered the buns or springs yet, and both are definately shot in the buckets. Shipping buns and springs up here to Canada I'm going to get raped on shipping costs ... can a good shop custom fabricate these parts??