I went to go check out my car at the shop and i was talking to the guy and he said my pinion in my rear diff is bad. Now this just gives me a reason to throw in the 4.10s that have just been collecting dust at the moment lol. I plan on droppin off the gears to him on Monday but i need to fix my speedo asap. Since my cars gonna cost me 1800 i really dont have that much money to spend. I know its better go with the SpeedCal but all i could find them for was like 100 bucks. Then theres the speedo gear but im not sure if they make them for the 4.10's. Can anyone clarify this or give me some websites that sell the speedcal for cheap?