Super Charger Options/Costs

So I know there are like 9001 threads on this (What! OVER NINE-THOUSAND!!!!) but I still wasn't able to find the info I've needed.

Ive been thinking about getting a super charger for awhile now but Im kinda lost. Ive been to URD's site and they have 3 options to choose from. I got the 5VZ 3.4L. Anywho, I guess I cant really make sense of what im working with between the different S/Cs from URD, the one from TRD, and the pulley size, along with all the other little things that come with it.

I'd like to know whose running these on the 3.4L and what your thoughts the S/C you chose and the associated costs of these. Also, how much tuning is involved? And of course you cant get a S/C w/o getting headers.. Which ones did you end up getting?

 

When the engine was in the truck, the headers (and all other hard parts) were TRD , to keep the warranty in effect. When the engine went into the buggy, I made them from scratch, out of the same size tubing and mandrel bends as the TRD headers were. Makes tons of power, woke up the 5vz big time.