speedster93b
+1y
i'm not one for bolt on anything, but they sell them so they must work... you can take a bolt in notch and weld it in... use the bolt holes as plug welds and weld up the sides too. that'd be strong. if you just want a small notch, you can take a piece of like 4"IDtubing, like 1/4" wall and cut it in half and trace it out on your frame and cut that part out, and weld it in right above the axle. just be sure you don't go more than half the vertical distance of the frame, it'll jeopardise your structural integrity at that point.
you should box your frame 8" in front and behind your notch too.