[GTX JOHN]

They are pretty rare and pricey.
Rod Green has been restoring them and running them
on a test engine for WAY less than I have seen anyone selling
them. He is on this site sometimes. He supplys core and rebuilds /tests them for
$800. last time I checked

Most of the 71 340 carbs were recalled for driveability issues when
the first year and replaced with 72 carbs. They are in high demand by Collectors of 71 340 Cars

I have found the 9800 Performance "Super Quads" to be faster- more tune able and much easier
to find parts for especially jets. I would sell a good used one for $250. (Or a new in box 9800 series for $450.00)
and supply info on how to prepare them for racing. The scarce 9800 Aftermarket series (Plus Rare Competition Series)
were the only Performance Calibrated Thermoquads ever built.
All 3 new ones all sold now!
Still a couple nice used ones I have been hoarding for 30 years!