Found one of those elusive 71 Swinger 340's for sale!

On a related topic, were the 340's actually blue in these cars? I would have assumed (dangerous!) that they'd have been orange like the 71 Demon 340 but then I don't know very much about why these cars exist and how they were put together by Chrysler.

The 71 340 Swingers were built late in the model year (May 1971) which was after the change over to painting all the engines blue.