So my dad handed me the keys to his first car. A 1976 Datsun B210. I was around 16 when i got the car now four years later im ready to start a build. The car still runs after sitting for almost 18 years but of course I want to do an engine swap. Ive been looking around but I can never find much on the 210's mostly 510 stuff. I was thinking about going with a Rb25det or the Sr20det. Any suggestions?