Nic
+1y
9" total cut axle (4.5" on each side). Body dropped 4.5" with 20x9.5" rims medium offset (kinda deep dish), with 45 series tires. Which be a 22" rim with 30 series tires if I decide to go with big hoops. Front on 18's with 45 series tires, not narrowed A-arms, used positive offset wheels. See pics and info on my page. Redrilled front and rear lug pattern also.
Narrowing your rear end depends on your wheel selection. And turning drive shafts is not the same as narrowing axles. The axle housing need to use a jig to section out the amount needed to be narrowed, and can't respline dakota axles, there is nothing to spline into the axles are like this ---\_____________/---- they taper in. Definately need to reorder new axles when narrowing. Also you can order your axles what ever lug pattern you want, just have your drums redrilled to the pattern you decide. If you stay with drum brakes?
To determine how much to narrow put on your new wheels, use some sort of straight edge and tape measure and determine how far the wheels need to be moved in.