There is a gentleman that had posted in one of the pontiac facebook groups about doing this.
He used the Sealed Power 2148 lifter which apparently matches the lifter bore oil feed correctly. I believe that is an LS7 lifter. He used the ford spider part 31-1000.
Per his post the modifications necessary were to cut the slightly reshape the spider to fit the dimension of the lift galley so the forks are properly located. Additionally the block side portion of the forks must be ground slightly to allow them to sit flush against the top of the lifter bore.
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-Jason
1969 Pontiac Firebird
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