Nope... but I would set the angle of the perches so your pinion is kicked up a few degrees.
If you haven't bought the spring perches from the dealer yet...consider getting the MORE versions: I've used RE and MORE on SOA D44s, and recently the handled MOPAR cheepies... They are cheap for a reason. MORE are quite a bit beefier than the others, and IIRC they sat higher on the tube than the others (free bit of lift). They are on sale now for $36 + shipping.
I'd also second the JKS OGS922 shock mounts. Another thing to consider is sticking both mounts on the rear of the tube...a bit more out of harm's way than the OEM setup. Max's setup is cheap, (I did that on the latest SOA , 1 forward/1 back) but if the bolt shears, there isn't any way to replace it, short of replacing the whole mount... I sheared the forward bolt, first trip out, but they are cheap :dunno: