Subframe reinforcement is always a good idea, manufacturers always seem to engineer the subframe attachments a little on the light side
. As far as the tool tubes are concerned, I know a lot of my KLR brethren have them. They usually use 3 or 4 inch abs and usually use those end caps with the gasket and the wing nut to close them up. They also usually put the tools into a roll or an old sock to keep them from rattling around so much and make them easier to get out of the tube. They quite often attach them to the front of the skid plate. Usually there's plenty of clearance between the front wheel and the skid plate to accommodate them
. Some people were also buying agri tubes and mounting them as well, same idea as the tool tube but premade with a screw on top. Would be a good place to hold tire irons and a couple of flatwrenches... Maybe even a quickjack?
