Wow! First off I just want to say this song is fantastic. Brings out some kind of feeling in me from my past. (Looooong agoooo)

It's definitely a 12/8 with an arpedgio feeling to it.
I opened BIAB and set the key to EM. I found a country gospel style called, "C_Gospel Country Gospel Style 12/8", wrote an EM chord and let it fly. The start isn't right but the rhythm is about identicle. I set the tempo to 90 and got it pretty close.
Too much reverb on the vox but the guitar was nothing short of splendid. Good on ya Mate. It's a keeper.
BTW I've never heard this one before. Is it an original or cover?