I don't think so. The older disk boosters are single-stage which makes them very wide. Squarebirds don't have a lot of real estate for width so we use a two-stage 8" booster which gives us ample boost but still keeps the diameter the same as our old drum brake boosters.
The hard part is not in the booster or M/C, it's the firewall bracket that raises the combination 5". Just about any one-inch M/C will work if it fits your booster.
I hope this helps. - Dave