Quote Originally Posted by TODA AU View Post
You should be fine with the EG SiR engine.
This uses the ribbed belt (4PKxxx)

The power steering pump pulley change would only be a compatability thing.
Btw, GFB used to make this pulley too, probably still do...

The GFB crank pulley is a little smaller than OEM,
The Alternator & power steering pulleys are a little larger in diameter than stock.
This offers a change in drive ratio together with a drop in mass.

FWIW, we use Fluidamper or ATI Dampers on high output engines.
Both of these weigh more than the standard balancer.
This is quite an interesting and helpful post. It was about last week while my friend was doing a maintenance, he had several plans and mods that he wanted and one of them is also having the GFB pully but we're both quite not familiar with it so we search for it and ended up on this post. It seems it has a compatibility thing that my friend needs to know. Anyway, thanks for the reliable info. My friend would learn a thing or two from this post.