I chose the TEIN RS coilovers because I see a good deal of drifters using them such as the Falken team, so I figure they must be pretty good... expensive, but good. If there are any better coilovers for the money though let me know, cuz Id be happy to spend less for good performance.
Also, what I meant about all four struts was that my 240sx just has struts and I didn't know if coilovers could replace struts or if I would have to go with after market struts instead of coilovers.