Dude, where you at?
Haven't seen you at the gas shop since it re-opened. PM me...
Most of the aftermarket 1.6 rollers are to wide for the stock center-bolt
head-covers -- the oil breather won't fit in between them.
I wound up going with some Crane's that are specifically for these GM heads.
And they were, as you might guess, price-ier than e-bay bargains.
Also the push-rod length is a bit different (shorter if I recall) to keep the
roller properly centered over the valve. Off-center will cause excessive
side-wear on the valve guides. At least thats the theory.
I'm pretty close to getting mine running -- when I get back in town soon.