<VV> Shroud Bolt Sizes?

[EVERETT WILSON]

After 3 years and a move to another house, I am
finally at the point of maybe getting my 64 Greenbrier
on the road.  

I got the old heads off and replaced with some rebuilt
late smoggers I had available, using coffee can
spacers as was suggested here several months ago! 
Everything seems to have gone OK.  Only had 1 loose
stud and it didnt pull out, so I JB welded it and it
seems to be nice and tight. 

I found all of the engine sheet metal, but......yeah,
the various bolts and screws....well, lets just say I
wasnt planning on taking this long to get it together
and didnt do a good job of bagging them up.  Add a set
of LM heads to the mix and I need some help.

Can some of you advise :

Those small self-tapping machine screws - what size
are they?  Not the sheetmetal screws (I have lots of
those) , but the ones that go into the welded on nuts
that early shrouds seem to have everywhere.  (havent
done earlies in 25 years, lates dont seem to have as
many bolts)

The end of the heads (Late Model)  the medium sized
bolt holes are different on one end than the other.  I
need to know the smaller sized ones.  On the back of
the left bank/front of the right bank.  

I found a bag of  the small 3/8 head bolts that fit
several places, so Im ok with those.

Im heading out to the local bolt supply on the way
home and forgot my samples, so Im asking pretty
please?

Everett Wilson
North Richland Hills TX