The old version non crossflow 200's & 250's were basically the US engine. The last of them were in the XB Falcons & had a cast-in intake & a 1 barrel carb. There was a hypo version of that called the 2V-250, it had a bolt on intake & a 2 barrel carb. Kind of a rare piece even back then. I ran a 65 XP Falcon hard top down there in the 80's with a 2V-250 & a blow through turbo, it could clean up a healthy 351 Cleveland. XC Falcon was the first of the crossflow's with an Iron head. They changed the casting of the block to except this head design, which is actually a copy of the Cleveland canted valve design. XE was the first of the "aluminium" heads, XF was the start of the Bosch EFI.
Then I left home, so now you're on your own from here.
Gogg's & Co's engine is actually the Buick 3.8 as we know it.
Sid.