Are all year models similar in strength? I'm looking at buying a 28-29 model and eventually putting a flathead in front of it. Is it going to tear it up over time? Is it similar in strength to the 8" Ford? If you put slicks on it, it will break, but radials won't kill it if the tires spin?! I will run it, but I don't expect breakneck speeds. Any input is greatly appreciated.