Help! 360 with 302 heads no compression

The guy had it running the day i picked it up. But it ran bad. There was no knocking or smoke. But you can tell it idled bad. The injectors were dumping fuel into the intake. I paid 300 for the truck

This is a TBI (throttle body injection) engine. You can SEE fuel being injected at idle. I would not judge the problem based on that.