The 1984 to 87 F150 fully synchronised 3 speed with overdrive works wonderfully against the original engine and makes driving the Model A a pleasure. This transmission is usually found in a Ford pickup with a 6 cylinder engine and can easily be identified by the straight shifter coming out the top of the trans and no 4 speed PTO door. You can use the Model A bellhousing but the center crossmember will have to be notched. I use the AA bellhousing because It is shorter and you dont have to mess up the crossmember, but there is no place for the brake/clutch shaft, so you get to fabricate parts. At the rear of the transmission, take the F150 tail housing off and saw off the rear bearing retainer, mill flat, use 1/4" plate to attach the Model A rear bearing retainer. This connects to your A torque tube. The output shaft must be cut down to fit, anneal it and get someone with a mill to spline it to fit the Model A u-joint. Drill and tap the shaft for the A u-joint retaining bolt. The driveshaft and torque tube must be shortened somewhere close to 2 1/2". Measure for yourself, this is approximate. Your original speedometer cable will work.