Yeah, just like the #14 head was the best made and most engineered. Good point LOL
But Mercedes head bolts are the best made and most engineered headbolts. Why wouldn't you follow the Mercedes engineers advice?

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CENSORED due to not family friendly words

can you go buy a 14 head at a dealer ship? or do they sell you a 22... same goes for the HG.

i would buy new head bolts because its cheap assurance and because of the actual size of the fastener and torq applied to it... even loosening them you get a pretty good idea how much torq they are under. reality tho is im going to find an arp stud and fastener combo that works when i switch heads.

what i said is a legitimate thing fiy. #14s are bad cause people are stupid and run them dry and or hot. subsequent revisions were done to address peoples stupidity, but for the most part the actual head does not change... no port valve or spring changes for longevity... i can assure you they just dont break haphazardly, ive beat the crap out of mine and its fine sooo i would say its pretty well engineered honestly especially if the engine remains stock and is driven like a mercedes.. (neither of which i do)

that being said i do have a #17 which is ready to be messed with.

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85 300d 0m603, 717, he341, 50mm external W/G with open dump, intake manifold as well as intercooled. need to figure out a different trans before i throw more fuel at it. the 717 trans and 8" ceramic clutch are already pissed with stock elements.