The shop where i'm putting these in is staffed by likely illegal mexicans and while head wrench Geno owns an e34 535 i'm not sure the access to the rear shocks will be the same on my 540 and therefore something he's going to have done before. I wanted to ask if there is a DIY w/pictures on taking the rear seat back out of the 540 and if you need to remove the deck as well involving speakers etc being concerned we don't mangle the interiour going for the rear shocks.