2000 hyundai tiburon manual transmission removal/replace. Did NOT change the clutch or remove release bearing, new transmission is all bolted together, how to reengage clutch fork to the release bearing?

If you're lucky, and you have enough room, remove the slave cylinder and boot and try to attach the release fork through the opening in the transmission. The spring on the back of the release fork needs to snap over the pivot ball, after the fork engages the release bearing.