They SHOULD charge you 2-3 hours of shop time. Lots of places like to try to charge a LOT for gear changes though. I've been quoted up to $700 for just the install before. That's when you make sure to laugh in their face and walk out the door.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.