----- Original Message -----
Michael,
Well it's a 2 piece (exhaust header) flange(
front piece about 3/16" and backpiece about 3/16"), the inside part has a
small tapered flange of the hole and the exhaust tube has a matching expanded
end which fits over the small taper ( hard to explain, but obvious when
seen) There is an outside ( exhaust header) flange which clamps everything
together ( no welding) - excellent idea. The only problem is that the inside
exhaust header flange may need to be stamped to get tapered flange around the
hole symmetrical, maybe the outside one as well. I will see what the costs
are.
Hope that helps!
George (down under)