Dynaco St-70 Upgrade

Who do you recommend to have a Dynaco Stereo 70 refurbished and upgraded? What price should I expect to pay? With modest soldering skills (I've built Marchand X-overs and Dynacos) can I do it myself?
Try Sheldon's site - he has some upgrades and you can decide if you have the talent to tackle it yourself. http://www.clarkson.edu/~stokessd/index_frames.html
go to www.avahifi.com If I recall they have a whole upgrade kit that you could do yourself.