ISIS w/ External Bearings for replacement?

[Scott Gordo]

I've got a set of Raceface Turbines with an ISIS bb that's churning
its way to oblivion. Does anyone make an external bb that works with
these cranks? I found this:

http://www.sram.com/en/truvativ/bottombrackets/howitzer/team.php

but I think it only works with new versions of ISIS splined cranks.

TIA.

Scott