i have searched, obviously not hard enough, but can someone give me a link to the changes in the later jdm 13bs? were they upgraded at all to be more reliable?

 

major changes were solenoid rack and turbos.

 

If you're thinking about buying one online, don't. Unless it's from Japan2LA. He's about the only one I'd trust about buying a JDM motor from. There are tons of people who have gotten a blown engine from various online dealers.