I would save the old battery box if the mounting areas are good. The repro isn't made right and doesn't fit on top of the frame lip like the original does. At least my friend's didn't fit. Most times the main frame can be saved and the tray replaced. Years ago I bought the battery trays from A&L and Bratton's and they were good. I haven't worked on a battery holder for over 10 years, but I'd guess the repro tray's are still good quality. I try to reuse original nuts and bolts when possible.