Help with spring rate please
 

I have what I believe are a set of flt-a1 shocks, unfortunately I cant get a picture to here but if you would like to view them then please view my profile.
I'm after the original spring rate as I cant seem to find out what they are!
I've had a chat with the jic techies and the man believes they are pre 2005 that were made in japan and never sold in the usa!
I was just wondering if anybody has come across these and can tell me back and front original spring rates, they are for a 92 fd
Cheers.