[dataway]

For example, Rock Auto gives the dimensions of the damper, ID, OD of the sleeve, overall OD, total length etc. Other parts it just gives the length/width/height but you have to be careful it's not talking about the shipping size.

The heads are a real pain, I used photos of gaskets that give you intake, exhaust, head surface and valve cover shapes (I have to scale them to 1/10), then I use a known measurement like bore size to dimension everything properly.

I'm certainly not a professional so I make a lot of errors in work flow, which is VERY important to ensure you can go back and change things. If you don't do it right you end up with a "solid" object that is no longer built up of "features", but just a solid model like an STL file.

Doesn't help that a lot of these parts were done in Autodesk Inventor, then I switched to Solidworks and a LOT is lost in translation.

The passenger head is just a mirror of the driver side, so the "16" is backwards (among other problems) unfortunately the heads came over from Autodesk as a solid.