new engine or stroker kit?

its to the copper. and i was told it only had 3000 miles on the motor because the kid wanted big block power, but its been sitting for 3 years...the sitting wouldnt affect anything tho...one of the bearings sits soooo sloppy in 1 of the connecting rods...usually when you get that the rods are out of round i think....and i was thinking blueprint engine too...but it sucks cus i just bought 750 dollar tti 1 and 5/8 " step headers....lamesauce......this sucks