Hello forums I'm looking for a little help.

I purchased this 1990 350sdl knowing I need to replace the head gasket.
yea yea rodbender and such
I'm not afraid of the work nor is it my 1st rodeo doing a head gasket.
I just need a little guidance to help me along my journey.

My main question is head bolt removal and re installation. More specifically the order in witch I should proceed. I have gone thru the 606 guide on here.
https://www.pelicanparts.com/techarticles/Mercedes-W124/50-ENGINE-Head_Gasket_Replacement/50-ENGINE-Head_Gasket_Replacement.htm
But I'm personally convinced that 603 and 606 can't possibly have the same amount of head bolts and I don't think they would have the same sequence. Although I know they are very similar they cant possibly be the same.

Any guidance would be much appreciated. If anyone has a 603 guide that would be awesome. I've been looking with not much luck.