I'd think that any of the RoadApple PPC's PSUs ought to work fine in a 630.

If you want to run it in a car, get the aforementioned RoadApple PSU, an inverter of sufficient wattage and fusible links for the hookup.

For pinouts of the entire 630 - 6500 Power Connector/MoBoMedusaMess, there's a famous diagram in the CC hackin' community, but I can't remember the name.