As Adam said, if you want fully height adjustable ones, you need the threaded nut that adjusts the mounting brackets height along a threaded sleeve, old style c/o make u compress/decompress the spring to adjust height, this will fark your spring rates and most likely screw the tuning of the damper.
I was going to try buddyclub s13 coilovers, ovalising one of the front holes in the strut and the bottom is bolt on. For the rear, cusco top hat and front forks on the rear (s13 standard rear for is an eyeball) and it should be ok, I needed to do a few measurements however, I might still do them soon anyway.