Hi Bill and Greetings from Nebraska!
I am assuming that the kits you are talking about are manufactured by "Legacy Woodturning" which is one of the common brand sold by Craft Supply. If so, I found a reference to the bushing dimensions that look like the following:
Bushing #1 = 0.405 inches (Cap)
Bushing #2 = 0.405 inches and 0.424 inches (stepped center bushing)
Bushing #3 = 0.357 inches (Nib)
You should be able to confirm by measuring the parts of the kit that would mate up with the turned blank. (Except for the 0.405 dimension on the center bushing as the blank gets turned to the diameter of the center band with a tenon turned down to the 0.405 dimension).
According to information I found, a relatively close match would be the PKMONT-BU bushings from PSI. Here is the comparison of the nominal dimensions according to the spec. sheets between Legacy and PSI: (Note: The minor differences of a couple of thousandths of an inch are probably well within the manufacturing tolerances of the bushings)
Legacy #1 = 0.405, PSI = 0.407 (only ²⁄₁₀₀₀ of an inch larger)
Legacy #2 = 0.405, PSI = 0.405 (Identical)
Legacy #2 = 0.424, PSI = 0.426 (only ²⁄₁₀₀₀ of an inch larger)
Legacy #3 = 0.357, PSI = 0.360 (only ³⁄₁₀₀₀ of an inch larger)
Good Luck,
Dave
PS. PSI also sells PKMONT-BUX which is a "Sizing Sleeve Bushing Set". It essentially replaces the center band and is used to make turning to the proper dimensions for the body and tenon easier. Since the dimensions between Legacy and PSI look so close, this might be worth a try in addition to the PKMONT-BU bushings. Most of the reviews were very positive and said it helped quite a bit. The reviews also provide a little better insight as to how it works.
PSS. I think Turner's Warehouse may have the same bushings as Craft Supplies for the Euro kit if you want to go for the exact match. - Dave