I am currently considering rebuilding a 280 motor for my 240 Z. I have a 280 turbo motor and was seeking information on intalling 240 rods into 280 block and milling dished pistons .105 inch to make flat tops. Does any member have experience in performing this modification? DISADVANTAGES? I am planning on using the P90A head (hydraulic lifters) with stock 240 carbs and manifold. I welcome any and all comments and suggestions to how and what to do to make an inexpensive, fun, and durable motor. I would like to keep this motor all stock or original parts from exisiting model years. I also need some suggestions on a camshaft for this setup. I can't find any specs on the original turbo cam. Will this cam perform good as a street cam? or should I just count on purchasing a new cam?