Mirrors..... mine is an '01 and only has one spring in each.
Silencers/pipes.....the silencer brackets should have slotted holes where the bracket joins the cans. Try loosening the two mounting bolts off a bit to allow some fore & aft movement then offering your pipe up to the higher mount position - you may find it fits.
I have also known the pipes not to line up properly if the cruciform pipe where the headers join is not aligned correctly.
Cheers
Andy
[Edited on 2-1-2005 by Rushjob]