why do you want bags only on the rear ? ride quality ? height adjustment ?
for ride quality , they are great for this also BUT a properly set of coilovers will ride just as good .
height adj. , great for this .
but i would not do a car with only the rear end on airride because you still have to run a tank,compressor,valves,and switches so why not do both ends ?
the days of bags for only " mini trucks " are old days , like NSRA or retired flordia residents . lol