Conformity pic:
Not quite ready to cut into the plastic, but I had a quick look into the box and here I found a couple of interesting things.
THe white sprue in this picture (sprue H) seems to be a latter addition to the kit. It duplicated some parts already present on the blue plastic sprues:
Here you can see the head to head comparison between cockpit cowling halves, with the windows in different shapes and the "bulbs" stylized differently. Also there is no sign of the frontal air intake Tom had to delete in his build. Also the tires seem to be from different batches, the front ones versus rear ones. The rear ones are noticeable softer and feel more fresh. Again pretty odd, there are 2 runs of poly caps as well, 6 molded with the front tires, and 4 individually cut and packed with the rear ones

Instructions are all typical Tamiya in fine print:
The kit also come with a frozen stance featureless pilot - decals provided for this little chap:
Decals have printed Tamiya on them, but look and feel more like Cartograf ones... very thin, a tad glossy and with the backing paper very sticky to bare hand touch
I was asked already what version I'm gonna build and I chose #4, P. Depailler, just because I didn't like Scheckter's attitude and I don't want to celebrate arrogance, winner in Sweden ot not.
That being said, the build it's going to be OOB as per owner's request - but you know hot this thing is, probably I will modify something if I really cannot live with it

Fortunately, there is a full video on YT with the 1977 Monaco race. Unfortunately, the quality is quite bad:
And here's another video, also claiming to be taken on 1977 Monaco GP, showing the Tyrrell driving without a cowling
For being a complete beginner on both 1:20 scale and F1 models, I rely pretty much on your criticism, observations, feed-back and help with documenting, guys!
Thanks!
Gabriel