so i've had a spare ex250f engine i got out of a 1989 gpx 250 (that's what their called here in aus) and i was wondering if it'd bolt straight in a zzr frame. i found a complete zzr minus the engine and was thinking if it will fit straight in i will buy it for my girlfriend to get her license on. does anyone know if it will and if its worth it?

Ping Racer x on this; I think he was looking into a ZZR frame for one of his race engines awhile back.

I was looking for a ZZR frame for a long time. But I have no idea how much it would take to swap. You have any photos of the front of the frame. and radiator support?

I can't imagine Kawasaki casting two different engine cases for the ZZR and the EX. This was a mass-produced cash-cow of a motorcycle. There's about a 99.9% chance that two engine mounts will line right up.

Same engine, only the clutch cover was modified to have the oil filler at the back, to allow access with the fairing.
How much do you want for the engine?:-)
Sorry, GPX engine was painted black, ZZR was silver.