Hello Yall,
I just bought a 1984 Jeep CJ7 with a 2.46L 4 cylinder engine, and a 4-speed standard transmission. After driving it for 1/2 mile it died on me and I found out it had a cracked engine block. Now I am looking for a 4.0 six cylinder to replace the 4 cylinder engine. Here are my questions:

1- Does anyone know which 4.0 year models would be compatible with my Jeep?
2- Does anyone know where I can get a used one?

Thank you