I am doing my dead level best to make my Early 260 into a boulevard cruiser. It is a hybrid, with a mild, 350-350 chev, I have queit matted, 4 mufflers, two glass paks up front and two turbos out the rear with 2 1/2 pipes and a X pipe. Drone is manageble. Driveshaft is aligned. (major good! vibe stopper) All wheel bearings disassembled and greased, with new parts as needed. new rubber (stock) suspension parts, No Urethane anywhere, and all parts replaced. New tie rod ends, ball joints, complete brakes with new rotors, shoes, etc. This car is pretty smooth. BUT! it still has an anoying vibration that you can primarily just feel in your arse, or through the seat. I pulled the struts out during the rebuild, I don't know what they are, but they were stamped "Made in Venezula", they felt good, so I put em back in. I was feeling kinda poor about then due to all the other parts, so I took a short cut. Anyway, I have decided to repalce all the struts with new. I am not going to shortcut this time, pulling struts is a pain in the arse and I ain't doin this again!! My question. Looks like strut mounts are at least 57.00 or so apiece, best price. Mine look good but they are 40 years old. Does the rubber go bad? Will it make a diff? Anybody been here before? What is the absolute best strut for a creamy smooth ride? Thanks!!!