I didn't realize that the Chev inline 6 cylinder engines in South America were that significantly different than our engines?

I Think the issue is that Walt's balancer is larger than what is being used.
A little bit of clearancing to give us .060 clearance between the cover and balancer and all is good.

If other options were available when I was looking then I would have considered those.

V8 Camaros are like navels, everybody has one.
69 Camaro EFI Turbo 250 project is running!!