Friend pulled the motor out of my Brat GL automatic yesterday and pulled the heads off. Both heads are cracked between the valves and one cylinder has broken rings and scoured cylinder. I am looking at 1981 EA81 and 1985 EA82 from manual transmission cars. How universal are the bell housings on these early to mid 80's Subaru's? Trying to keep my Brat alive for another 10-915 years if possible.