I'm planning on running my exhasut through the frame. I have machined 4 brackets that will hold the 2.5 inch tubing solidly at the point it goes through the frame. I think Copperhead is fabbed like this. I realize that I will have to run flexible hose, stainless braided behind the headers to allow the engine to torque. My question is, has anyone try this set-up. I am concerned with vibration transferred to the cab and if this set up has any other draw backs. Your thoughts, pro or con, would be apprecaited. BTW, I haven't ruled out using regular exhaust hangers and not going with the solid mounts. Cheaper anyway! I'll attach a pic of the bracket I'm talking about. It's split in the middle, probably won't show up on the pic. Thanks, Danny