I've used both 2 and 3 jaw. Problem is the 2 jaw pullers tend to bend the stock pulley. Which you may want to save just in case. A 3 jaw puller will need to remove the t-stat housing for clearance (a good idea to change your coolant at same time, or just top it off if you don't have the time).
I have a 3 jaw and need to do my SC pully sometime soon If you're near melbourne drop me an email and we'll meet up. I have a 3 jaw puller I picked up from harbor freight for like $6 or 7. Hope it'll work.
-John