*1. Yes, both bushings are the same. All four are the same.
*2. I can measure one and post later.
*3. Other than Eurosport, Monte Hospital has urethane bushings. The X1/9 and Scorpiacarlo use the same lower rear A-arm.
http://montehospital.net/shop/index.php?main_page=product_info&cPath=27_24&products_id=681
Do you need the bushing removal tool? The loaner bushing press tool is here if needed, just send me a note.
There are shim/washers between the A-arm bushings and the body mounted suspension bracket. These shims prevent excessive compression of the bracket which can cause excessive loads on the brackets by compressing the two ends of the lug. The precise location of the shims does not matter, what does matter is using the shims to reduce the space between the bushing and bracket end lugs enough that they do not compress much once that M14 bolt is torqued to spec. Make sure the thick washer on the nut side if the M14 bolt is in place under the nut. This acts as a space to keep the threads out of the bracket holes and allow proper clamp forces on the entire assembly.