Having seen the bronze driven gear torn up on a handfull of PTO winch assemblies(Tulsa/Ramsey, Koreing, and Toyota) that had increased the size of the shear pin, the fuse will just move to a more expensive, or possibly hazzardous piece. I am not saying that PTO winches are not good, nor am I implying that the Toyota drive system could not provide power to a larger winch. I am simply saying that 'probalby' beacuse of liability, they de-rated the winch, as to hopefully lessen the likelyhood of a catastrophic failure leading to injury, because someone was not using good judgement while winching. We have not ever seen this happen before. :
Even the electrical winches that were offered later, were only rated at 4500#'s,(IIRC) and it appears to me in the drawings to be a Warn 8274, or a real good copy of one.
If Ramsey wants to accept the liability of selling thier winch as an 8000# unit, then that is thier decision. Toyota must have decided at some point, that it would be better to not sell thier PTO winch rated at that much. I am certain that, with a larger shear pin in place, that a person could overload the winch and the cable very easily, and we all know how much fun watching a loaded, snapped winch cable fly around is...
In the end, knowing and understanding the limitations of your equipment, and proper usage of it, is all that really matters, electric or PTO.
Dead batteries would prove probematic to both Dave...
Good luck!
-Steve