I need help getting dimensions for a few parts of an RB20. I currently don't have one or have the current funding to buy one. So I need help to get the following dimensions: cylinder head intake ports, cylinder head valves, cylinder head intake manifold bolt pattern, cylinder placement on block, and spark plug placement on cylinder head. I know I just need to get my hands on one but thats not to easy in the USA. This is so I can make a basic 3D soildworks model to run some solidworks simulations for both of my current projects. Any help is greatly appreciated thank you.