[Roadsters] Differentials

[Bill Cole]

Yes, you will feel the gear change, also going to a smaller diameter 
tire will have a similar seat of the pants feeling of having more 
torque. The R&T articles from the late 1960's has a new 1600 at 12.1 
seconds while the S/U 2000 did 10.2 seconds in the 0-60 mark. I would 
bet on it that if the 1600 used the 3.70 gears like the 2000 has, the 
time would be even slower..The 3.90's from the 1600 are a great match up 
for the u20/5speed combo, if the 3.70's are swapped out for the 3.90's 
also expect to need a different speedo pinion at the tranny to correct 
the speedo reading on your gauge...Bill