The cryBaby and vox series are easily conveted over,but the Vox Clyde MC Coy comes with true bypass and a 9volt adapter plug in..Go to www.fulltone.com for the drawings on the true bypass mods..
I converted my stock GCB-95 to true bypass along with an LED using a Fulltone 3PDT switch. Real simple stuff I reckon, as long as you're fairly familiar with electronics and are handy with a soldering iron.
I converted my CryBaby to true bypass using the Fulltone instructions. It was easy to do and it definitely improved my tone when the wah is off. The inside of a CryBaby is a heck of a lot more spacious to work in than a Les Paul control cavity.