how does the LS1 bottom end hold up on motors past 100,000 miles. the rod bolts are the weak link right. could I just replace them and feel confident the lower end would hold up to a head cam swap.

 

I'd say drive it the way it is and wait to get a new short block/ rebuild to even think about putting heads/cam on that car. I'd definately get all the bolt ons first - ls6 intake, subframe connectors, pulley, gears, headers, exhaust...ect. Check out the stickies.