Restoring 1969 dodge dart GTS after 24 years

I'm reading a lot of good stuff here, kind of goes with the inconsistences at the factory's... depend who you talk to or what you read... yes the second build sheet on the glove box is true, spend enough time researching the GTS you can prove or deny almost every trim combinations and special order combination there is after all they would build what the customer wanted... the second letter being an m does show it a swinger 340..