1970 A Body Fuel Tanks

I thought I would start another thread for this rather than hijacking FUEL TANK INSTALLATION ORDER. I tried installing my new tank today (Spectra I think...I bought it a few years back...no vents) and it looks like the filler hole is too far forward. The straps don't fit into the grooves either. I'm not sure I have things right 1) its a 68/69 tank 2) I need a 72 tank. Is this correct? I believe @davescuda mentioned this in the other thread.

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