[Jeff Alton]

It is not hard to "get everything clean". You have to do these steps with the top end you are already into. If you had an actual mechanical over rev the rods are coming out, period. The question is how do you want to go about that. New bearing and bolts/nuts, resize the big ends and rebush the small ends. Check for total length. If you don't split the case you can't measure the rod journal on the crank.

I would guess very few people who install ARP bolts use stretch, most don't have a gauge to measure. That is why ARP also supplies a torque value, the same way CP does for its bolts in their rods. You will be fine with the torque method.

After an over rev choosing to do a top end with new rod bolts, why are you sweating the torque vs stretch method. You are already taking shortcuts....

A regrind to 964 or similar profile will yield some gains. But if the cams and rockers are in good condition, the gains may not be worth the expense. Only you can decide. You can't replace/grind the cams without doing the rockers.

What is your goal? Fix a missed shift? Rebuild an engine? Figure out what each entails and make a choice. Then do all of the steps appropriate for your choice.

Cheers