the B44 uses a pin for the rear wheels so many different brands will fit (ae, jconcepts,losi,schumacher etc etc... the fronts wheels uses a standard hex so you got alot of choice of brands for wheels again easily available
If you want lots of carbon fibe and blue alloy bling then theres plenty available for the b44, (hubs, shock tower mounts, centre bulkheads) all you really need for the b44 after buying the kit is the roll bar kit and the lipo brace or you can just cut out the two centre cell locators off the nimh tray and thats just as good!