Blueprint engines. (Again)

I'm not a fan of blue print engines only because of a problem my friend had with then, a SBC they bought had coolant running out the exhaust and they pulled the motor and sent it back, It took them a month to test and said there was nothing wrong, another 3 weeks to get it back and the same thing antifreeze running out the exhaust, these are all old guys that were involved in this project and I wont say there names but big names in drag racing, Blue print engines treated them like they were assholes.