IMO, If you are going to use roller tipped rockers, you should just save yourself the money and stick with stamped. Their advantage of friction reduction is minimal.
I went with full roller rockers (aluminum) and loved them. After the initial adjustment, I didn't have to readjust them. Just be sure and get some with the poly locks and read up on how to adjust them the first time.
The likelyhood of closing up any engine for 200k is rare, and its really not a big job to pop a valvecover every now and then if need be. But, in my experience I didn't have to mess with them once I set them and locked them in properly.
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