If you have mechanical drawings I could get from you it would save me from re inventing the wheel . I plan to use an oversize pickup tube on the 512 I am building now. The Heads (Boogieman ) and the block are at the machine shop (Mike Lewis Racing) for corrective machining. I will give a blow by blow in my other post as soon as i get the stuff back. I will say this , the machine work on the heads as received was very disappointing.