Z250B

[maladams]

Hi All
I'm new to this forum, so please bear with me.
A while back I purchased a non running Z250B (around 1981 I think). It took quite a bit of messing around, but I finally got it running, but it sounded like a bucket of bolts being shaken.
To cut a long story short, I stripped the engine to find one piston in bits, and its corresponding con rod and big end absolutely knackered.
So I'm looking for a replacement engine.
Do any of you have, or know someone who may have, an engine for sale?
Here's hoping.
Cheers
Mal