Thanks Paul
My hat goes off to everyone that makes up these headers. Working on your 1 hr per joint, I’ve got another 57hrs to go.

The mandrel bends I got were crap and had to cut off the tail that was clamped in the bender. This means a lot more welding.
Thanks Randy
Yeah, they will be ceramic coated inside and out. So wasn’t too concerned about the closeness. Also tried to keep a decent gap between the pipes, apart from the top crossover one of course. The longest pipes were 2 & 6, so by keeping 1 & 5 close to the head it allowed 2 & 6 a shorter route.
Regards
Clayton