I have a boat buckle I need to replace, 2013 zx200 ez loader. Are these the G2 @ 2500lbs, the G2 @ 1500lbs or the G2 stainless @ 1500lbs? Might just replace both and then have a working spare. Is 1500 adequate if I opt for the stainless steel? They are inexpensive either way, just want to get the right ones.