I do not know if they were originally sold as A "matched" set, but since I was going to use them on my 461, I had them completely rebuilt and setup by Timinator identically for this purpose....I was going to use them on the new motor but wanted to switch to an rpm airgap and a single HP950.
I just got off the phone with Timm and he said that holley sells carbs for single carb set ups and tunnel ram setups, but you can buy a single TR carb so how would the TR carbs be matched sets if just buying/needing one? He mentioned something about jetting being the difference. I am sure if he sees this thread he will elaborate. Anyhow, if they were not originally a matched set, they are now. He also said if you have any questions regarding these carbs, you can email him and he will run down the details.
I will take pics tonight or tomorrow.
I hope I made sense....I am still learning
LMFAO 
Apparently Holley sells "matched" sets of carbs which are assembled with different parts than Holley "singles", the matched sets are sold for dual carb set-ups... according to marcsrollin... do you know if this pair of carbs were originaly sold together in a matched set?
