Practice mufflers

Lenght will just about fit you will need a fairly short radius on the first bend of the tailpipes,4"centerlineradius will probably work if its a 90degree bend and even then you might end up cutting alitle of the outlet and inlet fittings of the muffler,11"wide that will probably just about fit,you will be close to the E-brakecable brakets on the framerail but im sure these things will fit in nicely althought very tight clearances everywhere. this goes from memory but i know a 18" bodyshell 3½" muffler is about as long of a muffler you can fit in into those pockets under the rearsat and that is with tailpipes made up out of very short radius bends and keeping most of the fittings.

sorry for the long writing.