They are probably '63 427 low riser center oilers.
At $2500 they are a so-so deal.
It has an iron, not steel crank. It has iron low riser heads and are not desireable. The connecting rods are nothing special. The most desireable piece is the block.
You can buy a new aftermarket side oiler block for $3200.
Why pay $2500 for a center oiler which may be junk?
Offer him $1500 for both.
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