Leading Link front forks (FJ Sidecar)

[The General]

Okay, Okay - I`m comin out of the closet - I`ve been looking for leading link (Earl`s design) front forks for a 93 FJ for some year`s now.
I`m intrigued by the design and function of sidecar suspension and have even driven hundreds of kilometres to watch sidecross racing in South Australia. (My entire desktop background is filled with a pic of a beautiful black blue fj1200 outfit)
I`m beginning to think I`m gunna have ta build a set, but if so are there any design specs out there?

I`m not sure if the URAL front end will fit but it is an option. ($600 U. S. dollars + freight? - ouch!)