Hi! Tried to search but didn't really find any answer. I've got a 2004 VN1600 Classic. I'm riding more and more two up and sometimes with luggage also. Been thinking of replace the original rear shocks with progressive, but came across some Nomad rear shocks on Ebay. You can adjust airpressure on those. Will they fit my bike and will there be any benefit buying these instead of progressive when riding more two up? BTW...what length is an original shock? I've been told 12,5". If going with progressive, can you pls advice what brand/model? I'm 198 lbs and wifey 155 lbs and occasionally some luggage.