Obviously not PCV or DFV. What are the spring rates? How can I tell?

 

I found a similar set on ebay. Appears to be Japanese made Ohlins shocks, possible adjustable strut perches judging by the rings on the shock. Springs, no telling. I couldn't find much info even with the part number.

 

Possibly Bestex springs? Impossible to know spring rate without any part numbers on spring

 

That green looks typical for Swift to me. If you can make a few basic measurements, even if no markings or brand. you can get a pretty good approximation of rate...easiest with shock or spring off the car naturally.

 

After looking through some old Japanese FD specific magazines, I found that these are called the High-Performa damper. There was also a set called the B-performa damper. Brand new they sold for 239,000 yen, so quite pricey. They use a C-ring adjuster to control height. The B-performa damper was a more traditional coilover as we’re familiar with now. The High-performa damper was more expensive.