minimazda93
+1y
if you have the cash buy the brackets, they are just nicer.....they come extra long b/c they are "universal" all you gotta do is trim them down and weld em up...as for notching, it would be wise to notch into the frame like balcar said, and then replate it with 3/16". Even if you dont run the 2600lb bag, bag clearance is VERY important....
but if you dont notch into the frame, MAKE SURE YOU PLATE THE FRAME WITH 3/16" FIRST!!!!