I had two express vans that I switched body’s on. A 2000 Quigley 4x4 with a 5.7 and a 2001 Diesel hightop van. The original plan was to use the diesel motor but it just won’t fit with the pumpkin on the front. So I continue to swap, and have the van up and running. The speedometer doesn’t work So the transmission doesn’t shift properly.Since then I’ve learned that the Drake modules are different with the gas and diesel body’s. So now I’m looking for a way to get a speedometer hooked up to the transmission. Any ideas? Thanks