My experience with the repops is "variable." They used to fit reasonably well - but the case was pressed in aluminum. Plus it looked "wonky" with poor lettering, and an internal black plate that looked like thin paper.
Then Tam showed me one of his latest. "Try this and report back to me" he says. It looked real nice, almost identical to the original AND included the plastic black binding knobs - somebody was really trying to make it like the original?
Putting the Ammeter into my original dash plate (1928-29 style) I found that the meter was a "skosh" smaller diameter than original, and would not hold in the hole with the ears bent out. A rubber o-ring introduced between the meter and the dash and bending the ears will hold it, possibly prevent vibration, and seems to work. I rate it about a "6" and certainly better than the aluminum meters. But - so close but yet so far.
I reported back to Tam on my findings. "Yeah," he says. "You're the third who has reported the same issue - If you want I'll refund your money."
I passed on the refund - the meter does look good in place. And perhaps it won't vibrate loose?
Joe K