I never torqued it but I'd guess around 10 ft lbs. I maybe go 1/4 turn past finger tight, watching the gasket crush. If it leaks I'll tighten it but it never does.
Reason: If 10 ft lbs won't seal it then 30 won't either and may break the housing. Which is what happened to my oem part. Brand new with everything to spec, flat etc., 30 pounds is believable. No idea why they'd spec that much but I know Ford Ranger bellhousing bolts are torqued to insane levels at the factory.