You'll definitely want to replace those main wheels. Also, when assembling the fuselage sections, glue the nose halves to their respective main fuselage halves this will help avoid some fit problems in that area. That's for the "bomber" versions, I don't know about the A-20G or the P-70. Eduard had a couple of pretty good sets for them, Vector makes some nice resin for the cockpit and nose sections. True details wheel sets include the liferaft that sits on a shelf behind the pilot. While I like the raft, I think their wheels are to "flat" for my tastes. There are plenty of other aftermarket bits available including conversion, exhausts, intakes, cockpit, etc.