S-trim pulleys

Hey guys I need to know what pulley sizes are available for the S-trim and what number of ribs.
I recently helped a buddy out that has a S-trim w/ stock pulley- 3.33" and 8-rib. I'm not an experienced Vortech guy, and I was at a swapmeet and found a S-trim 2.60+ pulley that was supposed to fit the S-trim but didn't realize it was a 6-rib. Does this fit the s-trim or somthing different?

Don't know of 2.60+ for Ford..There is a 2.62 which is for GM trucks.

I had a 2.62 6-rib on my S-Trim