YES Steve,
      The short header tube has the collar (with dog leg or L shape)
      welded to it.
      The exhaust pipe has a collar and small extension welded to it.

      The exhaust pipe is also flared to accommodate the short header tube.
      The L shaped ( dog leg) holds the two together. There would be
   movement
      between the two pipes which would allow for differential
   expansion and
      contraction, which I believe is your primary concern.

      This could design could have many variations, like more than one dog
      leg and
      springs, but I've never liked springs around that sort of heat.
      I believe it's a simple yet quite effective design that can be
      handled by
      the novice.

      Here is another by Bill Jepson, if you were concerned about gas
   leakage.
      Could be considered simpler.
      George (down under)

   What a great drawing........

   The springs hold up just fine actually, however, if there is a lack of
   comfort in that area, flat straps can be used with deformed nuts on
   bolts like "Jet nuts" tightened to just touch and no more. So movement
   is possible but he joint cannot be pulled open. If very stiff coiled
   springs are used, a second hole in each tab is used for a doubled strand
   of safety wire run through the spring but left just slack, to retain the
   joint in the event the spring would go soft, or fail outright, and then
   the spring pieces would be retained on the wire.

   Also a more compact joint can have the tabs pass tight against each
   other overlapping, and a common hole can share a loose nut and bolt as
   above. Have the tabs pass on alternate sides of each other, so you can
   still twist the tubing when disassembling it.

   The Dutch clamp should be used where disassembly is not a common
   occurrence, but still required. Once over tightened, the clamp is
   powerful enough to reduce the tubing diameter, and make removal
   difficult.

   Lynn E. Hanover

   Lynn,
   Did you have to use springs made from X700 or was common spring-steel
   ok? On the RX-2 and RX-3 sedans I worked on we used the bolt setup and
   never had a problem. Those had an open megaphone exiting under the
   passenger door! About a billion decibels. Ear plugs AND earmuffs and it
   still hurt!
   Bill Jepson



   Just stiff carbon silicone steel springs from a Dormon box at NAPA.
   The headers were carbon steel roll bar stock as well .125" wall with
   a blast tube or they die quickly.

Lynn E. Hanover


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