Best material for tubular turbo headers
http://www.burnsstainless.com/MergeC...ollectors.html
These are expensive as hell... But 321 ss double slip joints are'nt so you could just make your own with your own colector design...
Then make a tripod bracket or rod system... to mount the turbo to the block...
The tubes can expand and contract w/o cracking anything and none of the turbos weight will be on the manifold stressing the primary to head plate welds..
Another source.
IMHO I would'nt jet hot unless its a show car or something.. Just header wrap it.. You can get alot more insulation out of the better brands of wraps than a jet hot treatment..
On something not as corrosion resistant like a cast mani you just had extrude honed I'd get it coated in and out...






