Hello All I Am Going To Get A Dart 4 Bolt Main Block To Build A Stroker Engine And Supercharge It. 1st Question Does The Block Come Ready To Build --not Need To Be Bored?2nd Question If It Doesnt Need To Be Bored Which Im Assuming A New Block Doesnt. Then U Arent Actually Building A 347 Or 331 Right As A 30 Over Adds To 5 C.i On A 302 Block Right?.wouldnt U Be Building A 342 Or326c.i Motor?.