Okay so I don't know much about the suspension, I actually only have rims on my G35 awd because it came with them and it came with K Sport coilovers. So this was a learning experience with having this setup. So I have to drive this in the winter as well and so the stock rims have some really nice winter tires of them so I switch them back and forth for seasons and raising and lowering as well. Well this past winter I was able to raise the front 2 coilovers but the back 2 were seized up no matter what I tried. So I took it somewhere to get it done but they tore up my raising rings and now when I lowered them back down, I tried to raise one back up and it didn't work and then the ring basically fell loose off the threads. So now the car is kinda stuck where it is.
So I'm looking for options because I really have no idea where I should look or what I should/can use. Should I replace just 1 (or 2 since I'm sure the other side will end up the same)? Obviously I'm looking on the lower priced end but not trying to cheap out as much as possible. Also looking for something that won't seize up through winters if possible as well. If someone can either point me in the right direction, wants to help me pick one out or has something to sell possibly, let me know.
Edit: Oh I also forgot to mention that if possible I'm looking for something more stiff as the one I have is pretty bouncy and soft (even switched to hard) because these roads in WI are horrible especially right now in my area.