Awesome news Lynn!  I have Vipers I use on Salsa.  Have two other kinds of boots too - but the Vipers are the go-to for riding.  The regular Renegades did not fit his hooves at all.
I found a farrier that had the fitting shells and was glad I was able to use those before I ordered.

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Tracy and Salsa (1999 model year Paso Fino)
Middle TN USA, September 2019
Case History  https://ecir.groups.io/g/CaseHistory/files/Tracy%20and%20Salsa
Photos https://ecir.groups.io/g/CaseHistory/album?id=95827