suggestions....on finding a shop

I'd like to have a shop do the JMOD while I have my car in getting the tranny filter and oil changed. How should I go about this. I was thinking maybe they'd look at me like they didn't know what I was talking about and would have to just hand em a transgo shift kit or something.....any idea what I can expect to pay?

anyone?!?! I've called around every shop in my area and no one knows of it so I'm sure what I can do to get it done. The local ford dealership told me to bring in the steps of the JMOD to show em and maybe they'll do it, but i don't want to get hammered on price and am having trouble finding detailed steps for an 00gt..........
I really want to get this done while the pan is off for fluid and filter change.