What was the last year you could buy a brand new American built pickup with a flathead engine? I'll accept two different years depending if you're talking domestic market or export market.

'70s/'80s Ford Courier pickup?

I think I'm right on the make but year IDK.

We had a lot of International Harvesters in the fleet I know of a 67or59 P/U that we had a flatbed and Hobart welder on it was a I6 flathead

'70s/'80s Ford Courier pickup?

Courier had an overhead cam engine.

I think I'm right on the make but year IDK.

We had a lot of International Harvesters in the fleet I know of a 67or59 P/U that we had a flatbed and Hobart welder on it was a I6 flathead

Last International with a flathead I think was made in the late 1950's. You're close with 1967.

Here's a hint:

The engine is 230ci.

The Jeep Gladiator could be had with a flathead six until 1961.

THe Dodge Power Wagon in 1968?

THe Dodge Power Wagon in 1968?

Yup. Supposedly you could order them all the way up to 1978 as a Fargo or Desoto in export markets, but I can't find any pictures of export models that late.