Badger Ordnance makes their unimounts in 1.30" heights, 30mm, 20MOA cant, with about 1.5" forward cantilever. See here:
Triad Tactical, Inc.*::*Badger Ordnance*::*Badger Bases*::*Badger 1 Piece Assembly, 20 MOA, 1.30", 30mm
Also, NF makes their unimounts in both a low, 1.125" and 1.375"...