Just stretching it out? You need extensions, extended brake bar, and an extended chain,... it takes about 45minutes to transistion between stretched and stock length.. i dont know dollars per hour, i do all my own work... do it yourself if you know how to use common tools
extensions are the cheaper way to go. but it all depends how long you want to stretch your bike. my 750 stretched 9 over with a 3-9 adjustable from myrtlewestcycle.com.
or you can look on candscustom.com for swing arms.
we offer weld in extensions to all our customers....a bolt on extension is nowhere near as strong as a welded extension...if anyone is interested give us a call and i will happily go over the details and prices...be sure to mention GDC!!! 803.285.8093