I think that the $770 is Aussie dollars for the Yella Terra ones.
The bushed JB Racing ones are US made.

J B Racing web page link.

Wikki link for roller rockers.

wow things have started to even out price wise, that's still $600+ USD,the yella terra ones are the ones to get imo, what's the issues with the JB ones?

The J B Racing ones should be perfectly good & last for a long time. The advantage of this design should be lower cost while providing many of the advantages of the full roller design.
At the time that I priced mine, the price advantage was not all that attractive.

I am not such a big fan of the Yellow Terra ones, I don

did it spool up faster with the roller rockers?

remember these are for hi-lift, hi-rev, race engines

Hi guy's,
I think in this way.
Bush type is not influenced by oil pressure.
The bearing type is suitable for high rpm.
Is it necessary to use a drag race and it properly by a track race?
Please tell an opinion.

Those JB ones are available in a 1.65:1. I like the idea of that. Plus there has been a bit of negative feed back about the YT ones.

My YT's are 1.65:1 and I've never had an issue with them

They look so pretty too

JTS springs - where do i get these?