[Kingsnake]

I recently spun a main bearing so Im looking for ideas to do to my matching # motor.
I guess what Im asking is what are some ways to beef the motor up? It is a 1970 formula motor, it already is 30 over, has 6x8 heads, and the bottom end is balanced. Im going to replace all the bearings, rod, main, and cam. What are the Best bearings to use? Someone told me I should clearance the heads to take a 1.65 rockers. Are the any little tricks to help prolong the life of the motor. Any resonable input would be greatly appreciated. I want performance but I want the block to be as safe as possible.
Thanks, Chris