Generation IV External Engine - Billet LS2 timing gears?

Looking for some heat treated single row billet gears i can use a C5R chain on what is a good set? I see some have a torrington bearing installed on the cam gear is that a good thing to have? I was looking at Cloyes hex a just and reg. key way setup also JP performances just dont know if i need the adjustable setup with a custom ground turbo cam i was told degreeing would not be a issue!

yank sells the set in parts classifieds

Got a link to them?
Here is another question which seems to be a controversial topic is it worth or needed to go with a double roller setup for around 1200hp turbo build i have read lots of threads and it goes both ways allot say the C5R chain is the way and req. no mods plus it's plenty strong?

That high I would go double roller. Just for peace of mind. I believe Katech only rates the c5R chain to 800 up safely.

I have read Katech saying they have them in 1400hp engines with no issues and i emailed Jason responded with no worries just use a good harmonic balancer and also they have never seen a broken C5R chain!