If you slightly modify a cyborg LPR that will work.
I've been following the evil m thread very closely. I might purchase a body and keep this as a project for over a period of a few years (don't have the money to shell out all at once).
Thread:
Stacked Tube Viking - PbNation
Bodies:
EvilM Bodies - FS - PbNation
Parts are:
04 viking Bolt, ram cartridge, bolt pin, eyes, detents, valve, feedneck
The 04/06 cyborg VASA will work, as will about any cocker one (with modification). 06 cyborg frames work with modification. I also heard viking frames work without modification.
Solenoid is the same as the 04/05 freestyles (and possibly later).
Eliapb is doing milling and making eye covers, DC is selling most of the needed parts and doing an LPR, coolhand is working on a frame.
edit- oh wow, the three posts above me came while I was writing this all up.