okay i broke my number 1 rod on my ls block a friend of mine gave a rod from his ls block from the number 1 piston i need to know do i need to get the crank balanced or not and i might be getting some high compression pistons and if i use those insted of my ls pistons whould i still have to get the crank balanced i need to know this soon cause i only have the next couple of days off of work and i dont want to put my new pistons on the rods and have my bottom end go out on me agin i want my shit done right so can anyone help me