Jamie, rvfigs...is this the Sumo Spring you have?
At Suspension Connection $177.00 a pair ...
ssf 106-40
1996-2016 Ford E350/450 Cutaway 2x4 & 4x4 (medium duty) - SumoSprings (Front) at this site...they show 106-40 with 500 lb capacity
and 106-47 with 1000 lb capacity
I emailed them to see which they recommend...both prices are the same
**what determined which sumo springs you chose ?