Yup as karl said, i had an issue with mine, so i trailored it down and they fitted it for free!
When i took it though, i'd left my rear bumper at home (40mls away!) so instead of having to go back, the lad that was fitting it, rang his mate- and they had one there in 10 mins!
Blueflame are highly recommended by me, the fit is better the previous mongoose, and i sounds much better too!