THANK YOU for the heads up .
Their website looks nice , screw them .
I'll go to plan # 2 : overhauling my old OM617.952 engine instead .
Another stupid question : I was pricing engine kits and it seems the pistons come in sets with the liners ~ are OM617 engines " Wet Liners " ? all the ones I've seen headless appear to be pressed in cylinders....
If I yank my head off and find it needs boring , I'll junk the block and buy another , they're cheap @ $ 250.00 fan to clutch including IP and all accessories .
I just didn't want to get stuck in a overhaul job if I could afford it because I can no longer do it and have to trust another Mechanic to touch the nether regions of my baby

.
It needs about $2,000 worth of ancilliary parts too .