I have a 2006 Mazda B2600 4x4 pickup assembled in Bogotá Colombia. So far as I can tell this model was last offeed in the US about 1992. I want to replace the standard factory shocks with the best off road upgrade gas shock absorbers I can find. (Truck travels daily over rough rock strewn dirt road). Anyone have a suggestion?

Consider these:

http://www.partsamerica.com/ProductDetail.aspx?mfrcode=RAN&mfrpartnumber=RS5039&parttype=49&ptset=A

You asked for a suggestion and I gave you one! The answer was direct and to the point--it was not vague. It gave you brand, cost, picture, description, and where you could buy it. What else did you want? Rancho RS5000 are the best off road shocks out there. If you wanted more than a suggestion, you should have said so! Go figure.