First tape I pulled was it. Notes say the song is done by The group Cornerstone (from upstate NY?).

Chorus:

20 naked Pentacostals in a Pontiac
Brothers & sisters jivin' in the back
Elders in the front
Choir in the trunk
20 naked Pentacostals in a Pontiac

The rest is there, but I can't decipher it. I was hoping someone knew it.

Bob S.