how to make a 6.1 spin safely 7500 rpms?

advises? Since i have to built a new Motor what are the absolute necessary part to change? And what are parts i can get from our chrysler dealer like gaskets, head bolts, maybe bearings..?
rods are ok on a 6.1? Just new rod bolts ( maybe i just had bad luck with one ), ARP? or are stock bolts new good enough?