Regarding the Lionel F3, when I did an ABA set of those I found it easier to replace the drives entirely rather than modify the Lionel wheels. I used drives from Weaver GP-38's with some additional parts from P&D. If you use the Lionel you'll wind up having to remove or replace a lot of electronics and the reversing units and come up with a power pick up. You can buy frames from Lionel so you could recoup the cost by selling the Lionel drives and starting from scratch.
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