[71cadc10]

I'd buy new rockers from GM, if you are worried about the trunnions. The kits out there are mainly more of a problem than a solution. brand new rockers ~#200
most of these kits wear out the brass/bronze bushings in short order. Especially on a L92/LS3 offset intake rocker

for stroker consideration, if it needs bored, then you are buying pistons and might be halfway there to a rotating assy. Makes it a tougher decision....if the crank is bad and you need a crank anyway...then makes it easier.

most likely from what i can see in your pics, you don't need to bore the block or change crank. You can have the hone touched up and re-ring it, re-use everything else.
Put ARP bolts in the rods, fresh main and rod bearings...let it roll. You'll never have to take it apart again for a refresh.