stllookn,
I have a 2.5/4 drop on my truck from DJM. The installation was quick and no problem. The cutting the ad refers to is a "C" notch for the rear on 4 or more inch drops. There are kits to replace the control arms, springs and spindals but they are direct bolts ons. Hence no cutting. I have heard were some people have had to modify their control arms in order to get a spindal to fit but the number is very low and rare. I personnal just prefer the drop spindal. It's easy to install and the geometry is the same for an easier alignment. Visit my web site for pics of the drop. I have not loaded the web page pic for the drop kit installation but there are plenty of other pics to show the stance.
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Gerardo
1983 Custom Truck
TX Plates: "BAD BOW"
http://www.geocities.com/abetterchemist/