Re: 4972s thermoquad
The '71 carb is harder to find jets for, unless you convert them to holley jets. Just sayin'. I prefer the 6138 or 6139 carb from the '72 340. Jim
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Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess)
2019 Baby Gators Stock Champion
2009 NHRA D2 National Open Stock Champion
1982 NHRA D2 West Palm Beach LDRS SS Runner Up
Past President, Southern Stock / Super Stock Association. 
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