It's funny but my situation is so similar to yours. I spent hours checking the Tamiya catalogues in the 1980's and that's when my love of RC vehicles started. At the time I was given a second-hand Holiday Buggy as a present. It was only recently that I acquired a re-release XR311 myself and coincidentally, I was also seduced by the exquisite looking RC Channel metal upgrade parts. I have many of the same parts as you and I can't wait to finish the build.
One's addicted, always addicted, haha for RC it is 😊. The RC Channel parts makes the car like it should in my opinion. Detailed building always takes a lot of time, looking forward to yours
I agree with this. Many early Tamiya cars had the same problem including the Holiday buggy, Rough Rider, Sand Scorcher, etc. For the XR311, I would not fit this front bumper.