I am basically done with the restoration of my '70, but can't help but wonder if I should replace the Rancho 5000s I have at each corner. Not sure how long they have been on the truck and if there are any opinions on whether to upgrade to possibly better shocks. This is really going to be a street vehicle more than an offroader which makes a difference and don't know if 5000 are good for street and highway driving. I know wildhorses and others offer their own shocks but are they really worth the money. Are rancho 9000 good since they adjust or just stick with the 5000?