71 440 build ? grooved bearings mains and rods

I know it has had to be covered here just cant find it... how do I know witch to use.. full 3/4 or 1/2 grooved bearings...the ones I took out were 1/2 grooved on the mains with a thrust flang dia of 3 9/16 = 3.5625 looking for the right bearings.... crank is 30/30...thanks