GM 340258 Oil Cooler Adapter - $125 (Herndon)

GM C3 Corvette SBC and BBC Oil Cooler/Filter Adapter Assembly.
This adapter mounts in place of block mounted oil filter adapter for use with a remote oil cooler and a spin on oil filter.
It has two 1/2 NPT ports facing forward for pressure line out and return line and uses the stock pressure relief system.
You use 2 mounting bolts to attach to the block.
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GM PN 3951644 or 5/16 - 18 x 1 1/4 long hex head bolts.
Also includes GM 3653870 Adapter/oil filter fitting and GM 88893990 oil filter adapter gasket.