Interesting write-up on Valiant.org
1963
Canadian Signet (clone of Dart GT):
Dodge delta with "GT" insert replaced with Valiant crest. "DODGE GT" plastic insert in middle of stainless panel between backup lights replaced by black plastic insert, silver "Signet" script in middle flanked on either side by Valiant crests. The Dodge Story shows Signets with V-200 chrome adapted for the Dart body; however, it's been so long since I've seen one that I can't remember if production Canadian Signets had these pieces or not.
1964
Valiant 200 (Dart 270 clone)
Stainless strip which reads "Dodge" at bottom of trunk lid replaced with similar strip reading "Valiant". Some seen with Valiant crest with "200" banner across middle replacing round badge
Valiant Signet (Dart GT clone)
Valiant front clip on Dart body. "Signet 200" emblems on front fenders as on U. S. model. Trunk lid ornamentation as on Canadian Valiant 200 with appropriate 270-to-GT chrome strip between backup lights upgrade. Some seen with Valiant crest replacing Dodge delta with "GT" markings on C-pillar; had chrome louvers as seen on '63 GT/Canadian Signet C-pillar. Canadian '64 Signet convertibles and hardtops had '63 louvers mounted near rear wheel well. Side chrome as usually seen on U. S. Signet with appropriate change to piece mating with rear wheel well. Barracuda "fake mag" hubcaps occasionally seen on late production Signets.