Pressure tested my cooling system, pumped 15 psi found a very small leak between bell housing and engine. What's the best remedy I can do for this leak? Fresh rebuilt. Please help!

 

Between the bell housing and engine eh?

 

Make sure it's not one of the coolant hoses to the throttle body and BAC. Also make sure the leak is not coming from the heater hoses which enter the firewall directly above the bellhousing.

Failing those, it could be a freeze plug on the rear iron behind the flywheel.

 

If the thermowax hasn't been deleted, my money is on a loose clamp on that return hose. Otherwise, hope for you it's a heater hose.

 

Is there an easy way to replace a freeze plug?

 

Yes. Remove the transmission and flywheel.