I don't know if they're the same but you can send a pm or e-mail to bigbee either here or on his site and if he has one taken apart he'll probably sell it to you. izovire also sells V-Cube 7 parts so maybe you can try him for a core.
Its an H perm. From what I understand about 4x4x5s, the R/L sides are fully functional, but the F/B/U/D sides are r moves only.
So this alg fits the bill.
EDIT: Im playing around with it now to adapt it.
Edit: failed. :fp
EDIT: SUCCESS! b2 U2 b2 Uu2 b2 u2 (4x4 edge parity) Rr2 U2 Rr U2 Rr2 U2 Rr2 U2 Rr U2 Rr (the alg from above)
Basically you do the 4x4 PLL parity from the right face, then the H [perm from the front. The U2 and B2 are really only a U and B since you can only do 2 turns, but I made the alg like that. lol.