4 left. 3 stock za50s, one e50.
The e50 looks to be bored for a gila. Was rebuilt at some point as it has newer case hardware and an aftermarket crank.
The zas are all bone stock
These should all be considered "parts motors" because I have no idea their story, except one of the zas I put a new wrist pin bushing in and maybe pucks but I don't remember because it's been years.
$100 each picked up in goshen indiana or add $40 for shipping.