Hello. I have two international 4700's. One is an older '94 with a 17500# rear axle- 2 speed rear with Dayton style wheels. My second truck is a '99 with 17500# rear single speed with bud wheels. Can I swap out the older 2 speed pig into my newer truck and maintain the bud wheels that are on it? I want the two speed in the newer truck, but want to stay with the bud wheels. Thanks. Joel