Set of R/T Valve Springs - $75

I have found several people that are running the stock 2.2/2.5 retainer with these springs with no issues. $20 at a junkyard or $5.35 each on RockAuto?

Another possible option would be the Hughes 1278 retainer. Not sure for it would work, but seems like it should and worth a call to ask. $66 for a set.