I have reman vortec heads on my 327. Im running a comp cams XE262 cam with 440 lift and magnum roller tip rockers. The reman stock springs were OK. I swapped to the comp cams beehive springs which gives me lift to 500. Im planning on swapping to a 280 duration and 480 lift cam. You are welcome to the stock springs, retainers, and keepers.