IML: Lean burn and exhaust help...

["Thomas A.Nedelka" <eesigns@xxxxxxxxxxx>]

If anyone can help..I have a 78 NYB with 400/4bbl and lean burn.  The car cameout of Calgary two summers ago with only 10,500 original miles/1 owner. I am trying to keep it as original as possible.  I had the carb rebuilt by a top Chrysler mechanic, and it has helped the roughness off idle, but not solved it.  He replaced the Throttle Positioning Sensor as it was not sending any signal, and reports that the other sensors that feed the Lean Burn are working, so the rule is then to go to the Lean Burn box.  IT is part # 4111278, both from the book and from the existing box.  I do have the Lean Burn replacement kit, but prefer not to use it.  Any idea where I can get this, or get it repaired?

Also, the tail pipe separated at the muffler, and I want to replace it all from the Y pipe back(extension, muffler, resonator, etc) to get it right and keep as original as possible. The car was build for Canada, and does not seem to have had a Cat Converter.

The car now has about 20,000 miles, with almost all original parts, and paint.  It is stunning, including the factory sunroof.  

Thanks for any and all help.
Tom

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