yay now i get to replace rod bearings

i gess oil pressure was not enough it now knocks at 2200-3000 rpm noticed it after doing 3 3rd gear pulls to 6500 for tuning .. and its real slight .. so my ? is can i just put the rod and main berrings in or do i have to pull the crank and have that turned or polished. man i am pissed it just started to make good power too ! got my LO lift down to 1 no knock was running real strong afr was at 10:5 to 11:0
at wot got the timing to 18-20 degrees boost was at 16psi on 93 oct
afr at idle was 12-14
i guess the best thing i could do is pull it apart and mic it ?
this is bull shit 3rd engine in 4 weeks ran for a week ...