Sounds like an excuse for a day at the salvage yard to me.
It's been a while since I looked at it but I don't recall it even being close enough to work. A billet fitting, as used on the Lokar may be able to be machined to fit. Lokar does have a custom department. You could try that.
Unless you just want the billet look, why not make it easy on yourself and get the new tube from Mummert, or post a want add in the classifieds for a good used one?
Lawrenceville, GA