Chris for the 405 same as 405 4x4 its look like hard the 4x4 version its an fwd whith rear wheel drive add but not change the engine orientation.
for have an car like bmw or mercedes whith rwd and you take an 505.
405 have an BE box if i have a good memory
there gearbox are on the left of engine
http://en.wikipedia.org/wiki/Peugeot_405