Well 1st off, its not over drop leafs. Its over the main leaf. You are ridding one 1 leaf spring where if you put bags to dump and lift it will twist it in ways it was NEVER designed for. How long will it go depends..... i know a guy whos on them for the last like 5 years. I have alost talked to guys whos broke after 2 months. How safe is it. How safe is it standing in the middle of a freeway with cars going by you at 80 mph???? Yea, id say its about that safe..... Im not tryin to discourage you or anything bro, but its honestly not safe at all and as i see it, plain stupid to be bagged over mono leaf. If i were you, i would save up the few extra hundred and get a 4 link. If your THAT impatient, build a 2 link even. I think 2 links are almost as stupid as mono leaf but its ALOT safer. My advise is to wait till you can put a 4 link on it, then bag it. You will be MUCH MUCH happier