The Mi5 has full length shocks, they just lowered the bottom mounting point to be able to do so.
Brandon, a way to make the RSD springs could be to switch out the bottom ball end/ spring perch. Have you seen if the AE TC6 (not the tc6.1 ball end, that's just a turnbuckle eyelet and too long) stuff fits? The TC6 Ball end is pretty short and lowers the spring perch,