If you asked for a specific jack for a certain model Then the date code would be clear if it was correct or not....Like if I ask for a 71 Road Runner jack mast then it should dated possibly OG to 1F....I assume the seller has posted on this thread already...That length is 1 inch longer than my date coded B-body for 68 so I think C-body w a different base....

From parts wanted:

"Looking for a 70 T post style jack setup (base,mech,post,lug wrench & hook) with Cuda 100 hook.

Would be intersted in the jack without the hook, but price must reflect that."

Hard to say you did say 70 but you also said "style"....