building my lb7 duramax in college and after tearing into it I find myself down to the block. injectors are shot. edge filters filled right up with rust/debris so I know new injectors are going to be in order. also ordered a new stock cp3. after im into it this far though kind of looking to build some goodpower. been looking around and notsure what way to go. kind of looking for prices but not sure on whats best for parts wise and also price wise. would like to make over 600hp. so I know ill need new rods. figured on just reringing the pistons as they are in good shape. but not sure where to go from there. any ideas appreciated1