Uberti 1875 from a 1890

[MikeM.]

I'm thinking about buying a 1890 model from Cimarron in 44-40 because of the correct blued finish ( I like the shorter barrel length anyway) and installing the under-barrel web and case-hardened loading gate, which are both available from VTI and possibly Cimarron. My question is will they fit?? Even thinking about going as far as to weld up and configure the hammer to be correct.