I wanted to rebuild the top end. I know these handle power on stock internals. A shop said it'd be a good idea to get new valves, dual valve springs, and titanium retainers. Since the head will come off to get a head gasket and maybe doing any machine work? 3-angle valve job maybe? What should I have done?

 

This is on the bottom end, but definitely get the 4-hole oil jet bolts before you try to fire up the turbo setup. They will buy you a ton of peace of mind.

 

Yeah that's on my list as is. Got Billmans Gen4 TCT so I think I should be covered on that end as well.