No, mine doesn't it's just 2 pulleys on a central metal lump if you see what I mean, the new one was 3 pulleys and a large metal thing in the back that looks similar to the old pulley but bigger and heavier.
Normanlaw - steering thing was a doddle to fit, took about 20mins for the bar and about 4 hours to fit an entire pas setup with breaks for lunch and stuff
Why do you need a three belt pulley? Do you have aircon?
You run a N/A dont you?
The original basic pulley would have had a torsional vibration damper according to my parts books.