Im trying to figure out what size lift was put on my new wrangler. The part number I pulled from the front shocks are rancho shocks for a 2-1/2" lift. The back shocks are the ones Im clueless about. The part numbers read 657341BP and Made In USA. Thats all I can get off of them (their in rough shape). Does anyone know what manufacturer makes this shock or even better, for what size lift its for?