For the best easiest install & performance increase use the Dynomax super turbo ##17730,,this muffler is a tight fit, but easy mounting
this is single outlet,nice sound quiet at idle & with police car next to you ,but has good sound at higher RPM
when you cut the old muffler off ,saw or cut as close to muffler as possible,, welds can be filed, cut down later
it is easier to mount your new muffler the more pipe length you have ..
the borla is best for increase horse power with 2 outlet,but can not find correct part number,most expensive.
mufflers can be mounted using hardware store L brackets,T brackets & turnbuckles mounted to the stock
locations often using some of the old brackets
always mount your muffler at the stock rear location ,mounting where the cat went hurts power & MPG
think about the way you will mount your new muffler & use the springs where possible
anytime I install a new part ,, I try to eliminate all possible parts to save weight
when possible always port the stock exhaust manifolds they have serious blockage,, it can be a real chore if you break some bolts /studs,how ever!! ,this is one of the most needed Fiero modifications,increase HP, better MPG ,runs cooler
[This message has been edited by uhlanstan (edited 07-16-2013).]