This 2006-2008 Ram 1500 MEGA CAB is a pretty rare truck. The more common “non” Mega Cab Ram 1500 4x4 is a standard A-arm front suspension normal 1500 truck. This Mega Cab version is essentially the normal Solid-Axle Ram 2500 heavy duty Chassis Design we cater to all day long, but with smaller axles and the Hemi engine standard, so most of our components fit it perfect!
The Mega Cab trucks are about 600 to 700 lbs heavier than the standard Quad Cab trucks, so keep that in mind when you are building your suspension. The only thing we sell for the standard 2003-2009 standard Ram 2500/3500 that may need a couple tweaks to make it fit, would be the front axle truss we sell, but it does fit.
So in conclusion. Use our Tech information, purchase products we sell for this truck, alignment, use the normal 2003-2009 Ram 2500/3500 sections, and all should fit and function great for you!