The Lippert 8,000 Lb Axles use a part # 25580 inner bearing, a part # 02475 outer bearing, and a part # GS-2250DL grease seal. Then for the brakes, you'd need the Electric Trailer Brake Kit part # AKEBRK-8.
In regards to the leaf springs and shackle straps, you'd need to measure for these unfortunately but if you let me know the type and length of the leaf springs I'd be glad to see if we have an an option for you. view full answer...