[whitetop]

Marlin it is period correct. All the Offenhauser TR's were available in 1970 and they never changed the design nor the lettering etc.
You can still buy them brand new from Offenhauser through Summit.

Most people who built these back in the day like Offenhauser best on the street-it was the right combination of plenums shape and size.

Couple hints-don't run a radical cam with a TR on the street. You need a cam that produces the most vacuum as possible to suck down that fuel air mixture. I have an R/V/performance style cam in my car from comp cams who helped me build the engine on paper.

Run the heaviest flywheel you can find and the highest gear ratio for torque at low rpm's and street cruising.

Run an electric fuel pump to at least start the car to prime the fuel bowls upon startup. I'm going to run a vintage Holley along with a mechanical pump and once it starts shut ff the electric pump.