We do have a way to very easily convert an underslung axle into an overslung axle, but do not offer any overslung.
Instead, you can use the Dexter Trailer Axle Beam with E-Z Lube Spindles - 7,000 lbs # 8327864 (which measures 94" hub face to hub face and 79" spring center to spring center) or # 8327834 (which measures 95" hub face to hub face and 80" spring center to spring center) and add the Dexter Trailer Springs Over-Under Conversion Kit # K71-385-00 which moves your trailer's leaf... view full answer...