Confirming 302 Head Exhaust Valve Rotator Removal Parts

Hello All,
My first post here despite having been a lurker for years. Kudos to everyone for the advice, knowledge, understanding you offer here. Your words of wisdom reach many more people (lurkers) than you are aware of, I'm sure. My question: My 68 Barracuda 318 904 8-3/4 needed a new cylinder head so I'm replacing them both with a pair of 302 heads from a 1987 B250 van. The 302 heads have rotators on the exhaust valves and I'd like to replace them with standard retainers. However, the lock grooves on the exhaust valves are a smidge lower than they are on the intake valves so if I'm using the same retainers and springs on both the intake and exhaust valves, that will cause a lower spring installed height on the exhaust valves (corrrect?). On a couple threads you experts have said not to worry about that but someone also said the exhaust valves can be replaced with ones that have grooves that match the intake valves. The machine shop says the valves are all in good shape so I can reuse them if the difference in installed height is ok.
I have new Comp Cams springs, retainers, locks for the cam I plan to install (Summit part CCA-K20-221-3) 212/218 @.050 .447/.455 LSA 110.
Many thanks ahead of time for your assistance.