Speedo gears

Measure your rear tire height, and choose which rearend gear ratio you have. Where those lines intersect in the chart below is the speedometer gear you need in the transmission...no matter what transmission it is. Also, you have to set the speedo gear adapter into the transmission for the specific speedo gear you chose.
https://www.forabodiesonly.com/mopa...gear-charts-clarification-differences.463709/