Yeah you have to take the PS rack apart, remove seals, drill some holes and shit. Basically you take everything out of it that makes it a power rack. Then lube it up and put it back together. Then it's a legit manual rack. I know for a fact there is a write-up with pics on rx7club for FC racks, but I'm not sure how many people do it with 240s. The reason people do it with FCs is because power racks have a quicker ratio than the manual racks do, so by de-powering a power rack, they now have a quick ratio manual rack.