Hi Mike and thanks for the concern.  We do have a rigid header to "y" set
up.  The Y collector is then joined to flex tubing, and then to the muffler.
Have not read the 'other' list in many moons, and have never thought that I
might have a future problem in the area.  I'll put this on my growing list
of checks.
Tommy<><
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Tommy,

  I think you are saying that you have welded your 2 exhaust primaries into
a "Y" collector? Just want to be sure that you have slip couplings, flex
tubing, or some other means of allowing the 2 primaries to move relative to
one another. As opposed to a header that is rigidly welded together from
exhaust flange to collector. There was a recent crash discussed on the
"other" list that was caused by a failed exhaust system. The failure was
due (at least in part) to the builder not allowing for differential
expansion of the 2 primaries.

Mike Wills