KMW big bores.

[FG101C]

Does anybody know anything about 1/8th scale big bore shocks that were made by a compy which is now gone called KMW? Got these with a XB8EC I got. They are new and came with black springs. Wondering what brand springs might fit them, and preload collars too. Also just wondering if anybody has used them and if they are any good? They look really nice, black anodized with aluminum collars and spring retainers, brass pistons.

Thanks.