Changing lifters Big Block Chevy

[briscuba]

I recently took my (stock) 1970 402 CST/C10 to my local mechanic for a valve adjustment - standard hydraulic lifters. He told me that the #6 cylinder would not adjust. Sure enough, I pulled the intake and found a dead lifter. The others spin, work, and look fine.

I also found some rockers with a bit of wear on them.

MY PLAN: to replace the rockers as a set, same for lifters. I am not pulling the cam, however. I have read that this may be a bad idea..?

I could just replace the one lifter..? Do the set..?

I really just need to get it running again.

Suggestions?

Thanks!