Yep Kris, the AL129X will fit on your car but its not just a direct drop in and go...you have to sorta jimmy it in there.
No extra parts or anything are required...its just tricky to get it in there and everything hooked up. The case on the bigger alt touches in a spot so you loose some of your range of adjustment. Make sure you have a set of pretty new belts on hand if you havent' replaced them recently or else you might not get it to work.
Its a nice upgrade...some wiring will have to be done as well but its nothing more than running a bigger lead to the distribution block and then putting a ring terminal on the end.
Make sure you get the field wire hooked to the right spot