Quote:
Originally Posted by Brewster
The muffler would have 73 noted on the driver side rear under the gm part number and the inlet pipes should be welded to the muffler from the factory. Outlets where clamped.
July built car I would have thought it would sport them but you know those GM vendors, anything was possible.
The resonators and mufflers where the first to rust out on these systems thus where condensation would accumulate. Maybe that was a good thing for your car?
I do have two nos sd exhaust systems including 74 date coded mufflers. I know of only one other system besides mine on this planet. Rare stuff indeed!
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Brewster,
You have two sets and one other set exist, what are these worth?
Curious.
Thanks,
Dave
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1974 SD455 T/A 56K miles
1979 10th T/A (SD455 engine) 48K miles
1989 TTA #90 Festval Car Cloth/T-Top 5393Miles
1989 TTA #1456 Cloth/Hardtop 4655 miles 
2000 Silverado 2500 4X4 Tow Vehicle
Last edited by dm_fan; 08-13-2014 at 02:37 PM.
Reason: correcting typo by request
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