Hi, I am just about to pull the trigger on a an Eisenmann for the e36 and I was wondering if this was going to be a simple bolt up job or will there be a bit of welding involved.

If I bought this pipe and this silencer would it be a bolt on job:

http://www.eisenmann-sportauspuff.de...0500000_23.php

along with:

http://www.eisenmann-sportauspuff.de...1600760_23.php

It's very hard to tell if it will be bolt on or not. I don't want to go cutting the pipe on my original exhaust hence considering the pipe. Going with the Sport one over the Race version.

Also what's the best diameter pipes to order that will mean no cutting of the diffuser? Would I get away with 76mm? Or do I need to stick with 70mm?