I would go with Squiggle and get exact same motor.

My 280S engine and trans are really good, I did total valve job and had car running well with rebuilt carbs, rebuilt trans ($1,450) girlfriend had trouble, car got impounded, towed, showed up in pick-a-part and I scavenged all the parts I put into it, right down to the new subframe mounts hoses, etc. I was pissed but saved the $3,500 invested, even took the new windshield with gasket, radiator....
Good motors are getting expensive