How to route the exhaust to the back with an triangulated kit ??

[ACII]

Hello together,

as you can see on the pic , i have installed a triangulated kit on my chevy 51.

I really want to get my exhaust out at the backside of the truck..

Sofar i could install the exhaust with a big loop over the whole axle and bridge for the upper link bars...

Therefore i need to tube the bed ..

2 questions:

1.) A friend told me that the longer the exhaust will be, the quieter the sound..
is that right ???

2.) What space should i have between the exhaust and the air bags ??

Thanks for ur help

CU
AChi m