Demon non-option question

That's what I thought too, but the "1971 Demon Options & Accessories Report" shows the cigar lighter as option J15, a $4.00 option. And the AM radio is option R11, but maybe there was a more basic AM radio than R11 that came standard... You're right about the transmissions, the report shows the 3 speed manual trans as standard for the 198 & 225 slant six Demons..
But they also grouped them in packages to sell items commonly sold together.