Yokomo distribute AE in Japan - so the B4 is their 2WD at home. AE used to sell Yokomo stuff in the USA (YZ10 / RC10, not just a coincidence! lol)
But yeah, bring on the Yokky 2WD !
I think you should design it bathy, out of all your spare BX cars.
Heres the closest thing I've seen - the vitec. Years old but hey - you could make a new version!