Stock valve guide size X heads

inertia said

Hi, kinda figured that.
The guides coulda been machined for either seal, prob. but not nec the .500, but unknown.
Take both, return what you don't use.

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Thanks I appreciate the help... That sounds like my best option.... I hate coming on asking questions and sounding vague but honestly the engine was rebuilt like 10 yrs ago.... The engine builder I'm waiting for him to call and see if he has records from that far back....lol.