I'm not familiar with Crites' kit, but I'm presuming it involves moving the leaf springs to the inside of the frame rail. I did that move on my 66 Fairlane, along with massaging the inner wheel tub and rear portion of the frame. I fit a 10" wheel with 30x10.5 slicks in mine. I'm using Caltracs, but had them custom made to locate the lower shock mount slightly above and outboard of the spring so the factory upper shock location could still be used.