You have to delete PS to use the rear mount alt.
Its not hard to fab up if you have the motor our of the car and some time on your hands. Miko's bracket is not that expensive when you look at what is involved with design and execution. I have a few improvements that i would make to mine but i think Miko's are good. Just buy the bracket and a RWD alt and call it a day. I am not sure it would be much more expensive than the CS PS delete. The CS PS delete is a nice piece, i had one on my old motor, but the rear mount alt is way better.