cutter5941,
Welcome aboard. Hopefully we can set you straight for needed parts list, either through links to new/used parts or something from our private parts collection as there are quite a few active members with the stash of parts.
From the looks of it you look to be familiar with BMC products and if you take off the Nikki carb an put on a pair of 1 1/4 inch SUs and your E1 will look more like something from an '50s Austin (sorry not the Donald's Brute) or MGA. That's because the E1 is a copy of the BMC B motor so lots of parts work, though there are some that look close but do not work.
For gaskets pretty much all MGA stuff works, but be careful if there are two parts listed as one obviously does not work (like the timing cover gasket).
For a head gasket - MGA should work, though I have not physically compared an E1 to 3xmain-bearing MGA/B gasket at Victoria British with Bob. I'll be heading down later this week to get parts for my '64's engine rebuild and can check/compare/size up and take pics of head studs and what ever else as I have a crate J13 that I can take down a few parts for and compare for us all.
If you can post your specific wish list, I'll dig through the crate and take my J13/E1 parts along. In the mean time here is a link for comparable/alternate parts. I'm going off of this and getting the main bearings -
http://www.farm.net/~mason/datsun/datsun-parts.html
and of course VB/MM catalog for others -
http://www.victoriabritish.com/icatalog/csc/t.aspx
http://www.mossmotors.com/Browse/Compon ... teTypeID=1
v/r
Andy
one of the crate-o-parts -