TL; DR: Be forewarned! It will never let you go!
The first tools I ever collected were for my '43 Willys MB. Wow! An on-board toolkit! Driver's preventive maintenance! This won't be too hard. Just a few tools. HAHA. Boy, was I wrong. The hobby was afflicted with a bad case of shoddy first wave research and protectionism. After immersing myself so deeply in that topic I ended up co-authoring a chapter on the toolkit in a book series on the MB, I discovered that most jeep tools never made it to the ETO, were lost, or discarded by the receiving units. I also discovered that the
real motor vehicle mechanics were scrambling around in CCKW "depots" or makeshift motorpools, just behind the guys on the front, that they each got their own hefty do-all 119-piece general maintenance toolkit, and that it came in a cool flip top box with a tray with a hole in it for the oiler spout, in other words - the grandpappy of the Pelican case kit all modern Army mechanics still tote around, now on wheels. That was it. I was a goner. Within a year or so I had not only collected my first GMTK, but created a handy-dandy laminated guide for other collectors.
Then I discovered GJ! As you can probably tell, my interests have significantly diversified and also gone backwards in time since coming here. And yet, I just put together my 5th GMTK without really trying, having moved the former four to other collectors. Hooked. For. Life. There's just something about the kit - a little something to do a little of everything - and the mid 1940's that is just a sweet spot for vintage hand tools and collecting. If you take that peek and get hooked, I have some extras if you need them. So do Don and UNIAU and others. And it sounds like you might be half way there with stuff you already have sitting around anyway! I know you have the drag link bits!

Just sayin.