[bouncytruck]

I think the 6 cyl rigs in 1970 were all backed by the Dana 20. I belive the 307/3speed rigs were too. If it is stock, yours should be the Dana 20. If your rig is like mine, someone could have swapped out the original 307/3 speed/Dana 20 for 350/TH350/NP203 combo. Those NP203's are heavy!!!!