what year tach gauges are these? Also radiator bracket help

[hrc200x]

What year are these 3 tach gauge clusters from? The newer one I put a 85 mph speedo in it, it had a 100mph one which I knew wasn't right. I also put in a temp gauge that had the numbers rather than H and C. But I do think the H and C gauge that came out of it was the correct font/writing as the other gauges.

The two older ones are both mechanical oil pressure.

Also is a picture of a problem I ran into trying to install the radiator. Came out blurry where the problem is so I'll try to explain. The rubber that fits in the bracket hits the front main radiator support thing before the bracket itself tightens down with the 2 bolts. You can see the rubber is sticking out further than the mounting surface of the bracket. If I cut the back of the rubber off it might work, but would like to do it right. It might be rubber from a 70s model if they were different? Or the brackets could be a little short if there were different ones of them?