[Eatoniashoprat]

Thanks for the comments guys, I appreciate them.

When I put everything back together after paint I will make some mounts for the rear sections. Just as they are they move around a lot. Also when it goes back together I'll go with some better hose clamps and make some grooves in the pipes at all the connections.

There is actually a small gap between the pipes and the pan. I welded small tabs to the pan to hold the clamps. I was going to use some sort of exhaust clamp but I wanted to keep them as close to the pan as a I could (without touching of course). I do have some of the original subaru hose clamps that I might try for hanging the pipes since they are very strong and the clamping force comes from a bolt tightening into a nut. I couldn't see those breaking.

As for using rubber elbows, I was going to go this route but I figured the more metal I used the better it would help cool the coolant. Also I would think coolant would flow a lot smoother through metal than rubber, although that might be counter-acted but the extra joints. The bends are preformed steel 90's from canadian tire (exhaust pipe). Even though they are crimped their ID is greater than the aluminum pipe. With the large ID and the flow I imagine will be turbulent already I figured they wouldn't impede the flow.

I don't mean to go off topic too much but SteveC what headers are those?

Thanks for the input.. anything else?