LA 408 with Eddy magnum heads.

Shainesboostin said

I would need oil threw as thats how the head is oiled on the mag. There not shaft mounted. There stud mount.

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The short block I got from Blueprint was an 89 LA block with the roller lifter bores and the bosses. You should be able to verify what block you will receive, and if its the roller LA bloc then you can just swap over your existing roller setup.