Hey guys! I've been lurking too long, finally joined.
Welcome! Very nice looking Dart you got there, even better since it has been in the family since the day it left the dealer.
Gotta agree with OldmanRick, try and find a 4 speed for that 318, keep that 3rd pedal functional and besides, you already got the hole in the floor for the shifter.
"Save the Manuals!" (Anybody who reads Car & Driver will relate to that)