The lugs are welded on the sides and on the bottom...not across the top, which is why the parting line can be seen...I feel confident on the welds....I don't mind being different and going outside the box. I'll know when the studs are tightened down if all holds well. Half of the thread is in the meat of the block where the original lugs were milled off due to tooling of the 59 degree lifter bore..This is a R3 block with 4 bolt mains, heavier walls, bulkheads,deck, and filled pan rails, Manley pro-series rods , callies crank and custom Ross turbo pistons and pins, so there ain't much left in the way of the next weakest link!

Waiting on 18 bolt head gaskets from SCE (coppers)