any thoughts on how i would go about repairing
a bad leak on the riser of an old school header system

or , and this is a long shot
does anyone have a riser laying under a pile of dust in the back of there shop?
sorry about the pics , there cell phone pics

Yes I have one. Call me 502-262-7782 Alex

Just an update
these are not CMI's (i wish they were)
these are Rewarder , yes they did at one time make jacketed headers , but do not anymore

I had 2 pair of Stellings that were dinged in a rollover.

Stelling cut the dinged parts of outer tube out, then pushed
out/straighened the inners from the inside. Auto body style.
One split (3") on a inner was TIG'ed and ground.

The inner tubes were then pressure tested. Then they
TIG'ed patches back on the outer tubes.

Pressure tested everything. You can see the patches but
it was allot cheaper then 2 pairs of custom headers !!!!

my issues are the inside of the 4 tubes coming into the collector , i can see the spot , but cant figure out how i would go about repairing with out cutting the whole thing apart and fixing and re-welding back together
i should say , any ideas that anyone may have , this does not have to be pretty , just functional

These guys are great to work with. Just one more example

i'd buy a new exhaust, not worth the risk. if one is bad the other is not far behind, been there.