Dexter axles have a serial number stamped (or on a tag) in the center-rear of the axle. The number is the same for all (2 or 3) axles in a set.
Dexter customer service can take that number and give you the exact specifications of the original axle/spring set and/or determine what upgrades will fit your installation.
Their customer service is, by the way, excellent.
A
Formerly posting as "littleblackdog"
Martha, Allen, & Blackjack
2006 Chevy 3500 D/A LB SRW, RVND 7710
Previously: 2008 Titanium 30E35SA. Currently no trailer due to age & mobility problems. Very sad!
"Real Jeeps have round headlights"