Pullies are the same as far as width is concerned. The diameter of the PS vs non PS models is different. The belt locations are diff as well.
The difference is the spacing of the alternator for the non PS models. I have a non PS bracket for the alternator that came off an E model. Both brackets for the PS and non PS models are a super heavy chunk of steel. It's something like 30 lbs hanging off the front of the motor. I made a small aluminum bracket that relocates the alternator to the WP section of the belt. I'm eventually going to make a bracket for the alternator that relocates it to the PS location and still run off the WP belt. I'm only doing that so I can run a larger DP. If you are interested in relocating the alt to the PS location, I could probably make two at the same time. Or if you want my current bracket, I could sell you that after I make my new one.