[95476]

I just measured my pheaton and the numbers are very close, within 1/8 inch.
Don't cut your irons, figure out where the problem with the bows is.
I had a similar problem with a '39 convert sedan that was rolled.
When I repaired the top bows the spacing was wrong and they were slightly bent.
The LeBaron Bonney instructions helped with the spacing and I was able to get height measurements from a stock convertible sedan.
Everything fit perfectly after that.