Not sure what the series is, but here are the model #s.
BE5-2791-H0
BE5-2792-H0
I bought them from Shox.com, and it looks like they just knocked the price down. Good for you guys who are about to buy, bad for me.
But what's done is done, and I am very happy with the Bilsteins. Compared to what was on there, they are MUCH softer and smoother over cracks, potholes, etc. Not to say that they are a "soft" shock necessarily, but they feel better to me than what was on there, and what was on there before was way too firm.
The truck had some unknown shocks on the front (they were black w/ no label, sade "Made in Mexico" and didn't have anything that looked like a Ford part#), and Gabriel Ultras in the rear. The rear shocks didn't look too old and I didn't really have any complaints over them. I don't know how many miles were on the front shocks, but they were SUPER stiff and you felt every bump in the road when driving around town.
Now with the Bilsteins the truck just feels the way a truck should. They soak up all the small stuff pretty well but the truck doesn't feel "floaty" like the old GM trucks from the 80s (pardon the example). So, based on my limited experience, I'd say they are not a firm shock absorber and leave it at that.
