Hydraulic Roller Lifters

I'm in the process of rebuilding my 318 which is a '77 model. While browsing for a set of lifters on eBay, I came across a few sets of factory roller lifters. The thought of adding them for a small gain wouldn't hurt anything, but the one question came to mind... Will it work?

Thought about running the factory cam, but also have my eyes on a Speed Pro Hydraulic camshaft, 2600-6200 rpm range, 290 intake/ 319 exhaust adv. duration, duration @ .050 of 222 intake and 232 exhaust, Vavle lift of .447 intake and .450 exhaust, Lobe C/L is 112.