I'm getting ready to install my new Holset and debating whether I weld up some air-to-air pipes or find a place that can do the mandrel bending of the 3" or 4" pipes. Anyone know of any locations? It appears that not many (if any) shops have them. Only down fall is that I'd have to haul the truck to the shop.

 

There is supposed to be a muffler shop by Norwalk I think that builds 4" exhaust for a lot of pickups all the time pretty reasonable might be worth trying to find out who it is.

 

most places(like my former shop) can't afford mandrel benders, they're freakin EXPENSIVE. we just used a hydraulic bender, slight restriction in the pipe but still flows better than stock.

 

That sounds like an option to me. I'm not afraid to break out the MIG but I always seem to get my angles off when it's all said and done.

I'd rather not use a regular hydraulic pipe bender. I'm not sure if it would hurt performance, but would definitely look tacky.