Aftermarket shocks for 2003 Excursion

Hello - have an '03 Excursion that hubby and I bought a little over a year ago. We are full-time OTR truckers so it doesn't get driven a whole lot. Having said that, we are ready to address the wandering/drifting issue. Going to start with the shocks, and wondering if anybody has a recommendation for which shocks to put on it (a cross reference # would be great if anybody has one!)
All thoughts and input will be greatly appreciated!! ~Cynthia :-)