Engine and Transmission Tech

Would anyone know if there is a vendor or manufacture that has production bronze valve guides for Olds 215 heads? Or ones that I can cut down in length? I am unaware if Buick vs Olds valve guides are the same? But still unable to locate "Bronze" for either cylinder head types. I will be using Chevy SB valves, which are the same valve stem diameter as the Olds. I did try to go to the Ford 2.3 valves; but would still have the issue of sourcing for bronze valve guides.
I have a new set of the iron guides; but rather use bronze alloy types before I rebuild these cylinder heads.
I am not in favor of k-line insert liners, or wish to go to have guides custom made.
Looking into Precision Engine Parts (https://www.precisionengineparts.com); has a few suitable options. But they do not sell wholesale (without account); in which my machinist will not trouble himself doing; especially during this Shelter in Place Law still currently active in my state during this virus pandemic.

Thanks and be safe.

Pretty common practice these days to sleeve the guides.

Jim