So a few days ago, I got this delivery of a Nissan Factory adjustable Competition / Sports option / NISMO suspension set, and I finally found the time to do the research. First some Details, I got the two sets (front and rear) from two different sellers in JP, and it’s a lucky coincidence that they actually fit / belong together. The Part numbers are: Front: 54303-E4622 & 54302-E4622 (Atsugi) Rear: 55303-E4622 & 55302-E4622 (AMPCO) On all four strut housings, each of the two platforms / adjustment rings are adjustable in height, and none is fixed, like they are on some other kits. I assume that those sets were made…