No machine work involve for a hyd roller. So long as you get the Pontiac style lifters with the higher oil band. Which is what compcams uses.
The oil restricters are for solid cams. You can run oil restricted push rods on a hyd roller. Many run oil restricted push rods in conjunction with roller rockers.
Doesn’t sound like the engine has that hard of life. It still sounds like the original engine could stay in the car with no worries.
That Summit 2802 would be a good cam, durations are similar to a 744. I would suggest that over the 60916 crower. 2802 is probably the smallest cam that it would be worth the effort to do a cam swap.
Jay
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