Don't let the Midas crew tackle it for $750. Bring it to the GM dealer, they do a lot of them know the pitfalls, will warranty the work if they fuck up something along the way. I bet it'll be less money too.
Too much is just barely enough.....
2007 Tiger 1050
2005 Royal Star Tour DeLuxe
1973 Yamaha TX750 1984 Yamaha RZ350
1974 Norton 850 Commando Roadster