cam swap

You will need at least new valvesprings, roller rockers (stud mount), and mass air

If he bent up pushrods and what not, then he clearly had a valvetrain problem. He didn't check clearances (valve seal to retainer clearance, coil bind, rocker interference, etc) or he just flat out didn't install something right the first time.

I would seriously hesistate to use that cam with stock springs. With the lift of that cam he is running the ragged edge of what those springs can support as far as coil bind and spring rate.. Sounds like a ticking time bomb.

If you are going to do it, do it right. At least get some adequate springs. Check for proper clearances.. It's probably good to get better rockers and new pushrods, but you can probably get away with the old stuff as long as you can shim the rockers for proper geometry and lifter preload.