Hello, I searched and couldn't find the answer. So... I just bought my first 80 and I've had to do some repairs. For one, the front diff was messed up, so I needed new gears. I looked for 4:56's, but couldn't find them in stock anywhere so I bought 4:88's! It should be fine in the long run once I add a lift and some bigger tires, but has anyone driven with 4:88's and 31inch tires and if so what is the result? Really high RPM's? Thanks.