Thread: #90 or 105 on stock timing dampner?

hey im just tryin to figure out what spring i need to buy with my setup. i have a zzp fullsize intercooler, ported lim & gen 3 s/c, 1.9 modded rockers from zzp, speed daddy headers with stock pipping to magnaflow mufflers no cat no res, 3.1 pulley, and stock timing chain and dampner which is y i ask ls1 springs or the comp 105's because ive herd the 90's are rough on the stock timing but that dont make sense to me being as they're a lower spring rate