Here is my "Guess"
3.23 rear axle ratio on a 7 1/4 rear end. 3 spd manual trans.
Rear cylinder compression is at 90 psi, remaining cylinders are 110 psi.
Rear cylinder is farthest away from the radiator so that one looses compression first over time. Will still run a long time yet.
Pea Shooter exhaust pipe, 1 1/2" tube.
Oh yeah, like
@Tooljunkie said, take a look at the distributor, "Points Distributor".
