Ive see all kinds of different valve stem seals for a street hemi. Deep down I have my doubts it will change anything , But decided to do them while I have it opened up

Some say valve guide machining is required, yet some say not, but show what appears to be the same exact style of seal. AKA called a Positive Lock seal .. ( and it appears thats the style on the car now ???????)

Ive found what looks like a normal umbrella seal . yet others say this type will not work with dual springs