Thanks for the info!Congratulations. I would not recommend DIY on the spring swap, but I would recommend making sure that the shop knows how to put the washer in the right place.
http://www.titantalk.com/forums/titan-faq-howto-area/90394-front-spring-compression-how.html
I was worried...I just ordered HD's front & rear.I put bilstein HD's all the way around and I love them! Truck rides way better than stock and it doesnt feel like the rear is to stiff. Where I live, the roads are less than desireable, and my rear end doesnt hop or bounce around with the HD's. Ive never rode in a truck with the 5125's but im certainly happy with the HD's