good studs in main caps/good balance work/strong rods a must
lighter pistons yes
dont run a piston with a very short skirt
8/71 blower ratio pulley size???

if its a chevy

I wouldnt worry seen alot of 2 bolts with lotsa hp & rpm

remember to get 4 bolts in the bottom of a block you gota drill out more iron
things get a little thin down there

studs are your insurance

got a buddy with a 66 chey trk blown!!!
big stuffer on it big pulley also

runs the $%#@^ out of it 4 yrs now runs 94 octane even squeezed it once or twice

I still wouldnt worry
your engine shop should of would of told you you b fine
if they know engines
2 bolts are good peices to build if u stud em