Front end for a 3en1 FZR and engine with no running or leakin issues.
Hope this is the right section, sorry if not. Still not repaired my FZR400 since my crash in feb 08.

You can try to find a 3en2, FZR600, FZR600R Foxeye, FZS 600 Fazer or ThunderCat front end (inc wheels) should all bolt straight up.
Try a 600 3HE engine - it may be easier to find one and should drop in with minimal issues

Dont want to do the engine swap with all the hassle of taking the fan off the rad.