I was faced with a similar situation & ended up doing a 1 1/4" leather covered pad (1" pad + 1/4" spacer & the whole leather covered) & I don't really like the appearance.
I know this sounds strange, but a 1" red pad (Silvers or Pachmayr) with a 1/4" black spacer or better yet a 1" leather covered pad & a 1/4" non leather covered black spacer looks much nicer that an 1 1/4" leather covered pad.
If you look around you can find examples of guns with stocks lengthened this way & IMHO its the most cosmetically acceptable way to do it w/o a restock or possibly a butt extension with the grain painted in to match.
Something about a leather covered pad or mono color pad & spacer longer than 1" that just looks out of proportion to my eye.
