here's a sketchup warehouse link for the bolt (working for both v3 and v8) with a scythe kodati cpu heatsink mounted instead of the stock heatsink. i had to adapt the mounting position of the cpu heatsink a bit to give clearance for the ram slots. those mounting studs can be 3D printed by shapeays for example, and mounted by some self tapping pc screws (the ones usually used for 3.5inch hard disks are the best for this) https://3dwarehouse.sketchup.com/model/61b2fed5-5a21-4f86-9574-067cf850bde7 in there is a 3D render and live preview of the model, please note that dimensions are somewhat unaccurate still, as it can be hard to base the design off photos only. yours, ramon schepers.
the specific heatsink is still being sold although it is end of life from manufacturer https://www.newegg.com/p/1YF-00AC-00038 I would prefer a better mounting option though