I love the old UO8 and the wheels are the best upgrade you can make. You're going to run into a few issues though - bikes of that era used polished, box section rims. Mid-range and high-end bikes almost always came with tubulars which are effectively 700C. Those really are a PITA. Nearly all bikes that came with clinchers (like most modern bikes) came with 27" wheels. By the time 700C clinchers were common in the mid-late 80's, colorfully anodized and semi-aero rims were the style. In between you have a very narrow window where you can find polished, box section clincher rims in 700C. They're posible to find but difficult. That being the case your practical options are to either go with modern, probably black, semi-aero rims in 700C which will work great but look odd, or stick with 27" for the appropriate period look. You'll find that basically true whether you are looking for used, vintage wheels or purchasing brand new. You can buy some very nice new wheels with beautiful Sun rims in 27" for very reasonable prices. 700C will probably mean going with a casette hub which will be more work and expense. For mine I searched eBay and came up with a set vintage 27" rims built with the original French high-flange hubs and Weinman alloy rims that work great.