Hi everyone, this'll be my first post here. So I've recently bought a 2004 Crossfire. It has the head cover and breather cover oil leaks, among a sea of other issues.
So I've ordered the gasket, RTV stuff, and everything for an oil change ( I basically have no service history on this thing so I've decided to do that and change the spark plugs while i'm at it.)
The only thing I still can't find is a new set of bolts. Mind you, I'm in Holland, so the best source for car parts I have is amazon.de. ( Only 550 Xfire's were ever sold in Holland, so it's not like there's a sprawling aftermarket community for this car over here. )

Can anyone help me find a set, or at least the specs of these bolts? I have the service manual, but it doesn't seem to list the specs or an OEM number for these bolts.
I've been able to find that the little allen bolts are m5*18. Now I can find these, but not made of aluminum. I also seem to be unable to find any info on the weird E10 bolts that hold in the head cover.

I've ordered a torque wrench ( the ones I have only go down to like 30 nm) so I was thinking of reusing the old ones, but honestly that seems kinda sketchy to me ( if I break one bolt, I'll be without a car- and I really need it for work) plus I just want to do a decent job instead of a 'this'll do'- type of job.
I've been reading through this thread and used the search function, but there doesn't seem to be a consensus on whether or not the bolts can be reused and whether or not they absolutely need to be made of aluminum.

In short, I'm far from a mechanic, I want to do this myself and I want to do it right, which I think should be doable, but the thought of messing up my car kinda freaks me out. Of course I could have my indepent mechanic do it, but we all know how expensive that gets, especially here in Holland ( blame taxes for that.)
Does anyone have any info on what the specs for these bolts are ( especially for the E10 ones, since I haven't seen anyone mention the size, thread pitch and length for these.)?
I think I'll also email some local MB dealers if they can get a set, but somehow I expect them to be none too eager to supply someone with parts. After all, if I do it myself, they can't rip me off, which seems to be their main business model.