I have a sideoiler block that our old friend Hollis Franks was ready to take to the steel mill as he was pissed at it. He had spent a lot on it, lifter bores are bushed, and it has thick sleeves in all 8- too thick in my opinion. Bored into water, and decks compromised. It ran fine, but soon blew bubbles. He bought a std block from me, and brought the old one along "look at this!". Hate to give up on it, otherwise nice block. My buddy has a 672 ci 460 in his Pro Modified pulling truck, which has 1" thick deck plates and then sleeves- gotta admit, 460's are easier, just not as cool lol