I will start a new thread for the engine build on my '72 108.
The timing chain broke a year ago and broke the left valve cover and the head. I will need to look for other damage too, but I hope the block is ok.

I recently acquired a complete engine from a '76 450SL.

If the only thing broken on the 108 is the left head, then I may just pull the heads, get new valves, check the guides, and do a valve job. I am sort of thinking of rebuilding the engine, but since I only have so much time I will likely not do that.

Other than obvious replacement parts, is there anything that should be replaced while things are apart?

Are there any upgrades that could be done? I am thinking euro-spec cams would be great. Do the ports have any areas that need porting?

Any other suggestions?
Thanks,

Csaba