When I bought the Summit K-2801 cam it came with its own lifters. I purchased matching valve springs (not a dual coil either), matching pushrods (hardened), Cool nuts (adjustable, locking, rocker arm nuts), Comp cams steel roller rockers, screw-in studs (heads were tapped to accept these). I used the stock pushrod guide plates.
When you swap out a cam you should also match the rest of the valvetrain to the cam profile. If you don't you will only run into headaches later on. The biggest problem being valve float and possible valve/piston contact.
BTW the reason I chose this cam was because Pontiacwarriors.com (site no longer exists) used dyno simulation software with this cam (among others) in a stock 350 with #17 heads and a dual plane intake and it produced 372HP/394lb-ft torque. Again this was a simulation but those numbers are respectable.
