Bench Seat measurements

[Bodied67]

Question for you guys reguarding factory bench seats..

I got lowback seats in my 69, not sure what they’re from they were installed in the truck when I bought it, but I’d like to swap to a bench so I can take my lady and my son at the same time. My issue is that the previous owner also installed a floor shifter so I’m looking for a measurement of the back of the cab to the very front of the bench seat to see if I’ll be able to fit one without moving the shifter.

I do not have the gas tank in the cab it’s been relocated to the rear.

Any input would be great