painter

hi i am new to the site and need help for 30 years i have done nothing but paint motorcycles for a living but mechanical insight is not my my strong point. my yzf750 has developed the nastiest of leaks on the forks and they need replacing however o.e ones are VERY expensive ebay is the next option and here is the question if i can not get yzf forks what will fit i.e R1 R6 etc. thanks. p.s anyone painting thier bikes and need help and how to tips let me know