...manual trans and 3,0 v6 engine.? I asked this question and recieved the answer below.

Answer recieved:
its most likely 4.10, but you can try the dealer with your vin#, you can also count ring gear teeth and divide it by pinion teeth, also you should be able to mark a tire, count how many times the drive shaft goes around to make the tire go around once

Problem: I am confused.

The number on the VIN
plate indicate the ratio is a 4.56, however, I marked a tire and the
drive shaft, the shaft turns approx 2.3 turns to one turn of the tire. I
double checked to be sure. What does this likely mean? I would guess
the ratio to be fairly low? IF it is only a 2.3 ratio, then the engine
RPM will be fairly high at, say, 60 MPH? At 75 MPH the Engine RPM is
close to 3500 RPM. Can someone help clear up the confusion? Was there even a ratio of 2.3 ever put into a 1992 Toyota pickup?
Marvin