The Files on Cadgrab for me didn't work out, though attached is hopefully what everyone wants.
There is some difference in what I have here and the measurements that ludsonline has above. the exhaust port has a 3mm dicrapancy, this may be due to the fact of using a 1.5mm wall tube. This is where I see most projects differing a little on tubing selection and if the head has been ported out or shrinking/expanind tube to fit here.
none of these measurements have been verified agents a head (my project to far away to be looking at exhaust ATM)