Dr. Marneaus
Station Wagoneer
You probably already know this but just in case...
Make sure your friend that is doing the welding is aware that you used brake cleaner to clean the tank. Brake cleaner and welding can lead to some seriously nasty stuff.
http://www.brewracingframes.com/id75.htm
You've already set direction but... Didn't I see somewhere (ifsja.org?) you can get a plastic 'Burban tank to hang off the back of the frame that is larger than the stock tank and it fits decently? Just a thought.
He knows what he's doig as he has done it before. I don't really know him he's just a friend of a friend who is a mechanic. It's in his hands now, I'm sure he will follow the proper precautions to ensure that he does not go boom.
And yeah I've read about tank swaps and stuff but really don't want to deal with it at this juncture.
I have an old auxiliary tank that used to be installed on my truck but I removed when I put the original tank back in