Ok guys I have been told that installing 0-435 angle valve cylinder on my 0-290 D2 will increase my HP and get me close to a 0-320. My question is, if this is true the angle valve 0-435 cylinders have the provisions for fuel injection. If I put the cylinders on my D2 and add fuel injection. What kind of HP increase would I be looking at? What about if I added a stage 3 cam? Also there is a guy in NC that is manufacturing 10.5/1 pistons for the 0-290 D2 now. Not being a real engine man, it just seems I should be getting at least 160 HP if these things are done to the 0-290 D2. What about electronic ignition. What do the experts think?