I'm planning to install an SVC rear bumper and dovetail my rear fenders but i need a plan for the exhaust first. I'd like to run it back to the corner of the bed and tuck it up as high as possible and get it as close to the back of the truck as possible. I've never done exhaust work before but i am a home fabricator and can cut and weld pipe fairly easily. My question is, is there anything out there to mock up how you want the exhaust to run before you cut/bend any pipe? Is there anything flexible that you can mock up to get an idea of angles and lengths? I've never done exhaust so i was hoping to not have to do a bunch of trial and error with actual exhaust pipe, but maybe just going back after the axle won't be too hard.