narrowed 8-3/4 question

Got a question for you guys that have narrowed a 8-3/4. A buddy of mine is about to narrow one 3" on each side and we need to know if we can still use the stock seals and bearings or do we need to go to the green bearings? I'm thinking since 3" will be cut off the end the inner seal won't be able to be re-installed cause I think it has a lip inside the housing it drives up against but I may be wrong. I have a complete set of new stock type Timken bearings and Nat'l seals we'd like to use but just need to know if they'll work.

Thanks, Tracy