Confirmed rods are same same.
If you could snap a macro pic of where the drain enters the underside of the block in the main web that's usually a giveaway to a convert.
Just checked my 93 block and all the KS holes are Drilled/Tapped, from memory on NA's only 1 was? (I don't have my old NA block here anymore to check)
Correction found a really old pic and yep only the middle boss was Drilled/Tapped so check the 2 end ones and see if they look "hand done" .
Back in the old days they were installed dry and were squeaky bastards of things......
You lose a little bit of stiction by greasing them but I always try and buy the hardest I can to counteract that.
And that there is why I wouldn't use an Aluminium 3 piece bar there, think of the force involved and that steel fails very predictably compared to Aluminium.
Depends on how anal you want to get.
It "should" be straight in both checks, a quick dirty check is to strip the head torque the cams back down with no valves/springs and make sure they turn easily.
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