Anyone got a gsxr400 gk76a?

[virus]

im trying to ID some USD forks ive got, they have 90mm caliper spacing, 50mm top yoke diameter, 52mm bottom yoke diameter, 41mm stanction diameter, 64mm inner diameter on the brake disks and a PCD of 86mm on the disc bolts.

https://i251.photobucket.com/albums/gg307/virusjohn/WP_000167.jpg

Cany anyone confirm they are gk76a forks? And does anyone know what sort of spring strength they have? I'll be putting these into something a fair bit heavier than a gsxr400 so im going to want to change the springs, but to do that Im going to need to work out spring rate, diameter and length of the stock springs... nothings ever easy eh?



Cheers
John
____________________
own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[P.]

They are GSXR400 GK76A forks..

No idea on springs though..