I managed to get hold of the Edition 35 seatbelt which have red side stiched on them and thought that would finish my interior off well. The car I got them from had a heavy smash so the pre tensioners had gone off which meant having to swap the belts themselves over into my working units. I couldn't find anything particularly helpful on line so thought I'd put a quick how to incase its helpful to anyone....
When I got them I decided to give them a clean as they were out the car and it was easy enough to do - I was amazed how dirty they were!!
First job is to take out the rear seats, doorcards (mine is a 3 door), boot side units and C pillar trim. This gets you access to the belt units themselves
Once you get the interior trim out the way take out the seatbelt tensioners, pull out to full extension and hold tight!!
Work the belt out so the pin can be extracted - DO NOT LET GOT OF THE TENSIONER!!!!
Brace the tensioner so it doesn't unwind - that would be a massive problem!!
Install new belt making sure its the right belt, in the right position and the anti rattle bunch of fabric is facing the right way. Push pin in so it fits flush with belt then pull through making sure its seated properly
Fit completed new units back where they came from.
Rears fitted, also showing the old belt next to the Edition 35 belts
Fronts fitted
Re fit the interior and all is done
By the time I finished it was pitch black outside so this picture is not the best but you can see the front and rear belts on the seats.