Preparing an Imported 1964 US Valiant Racer to be a Street Legal Car in Canada

looks like reher morison flange adaptors check out the 3 bolt center tubes and funny bolt pattern on the front tubes, them aint just run of the mill headers :) lookin like w-2 stuff from here and them offset rockers...Hmmmmm some goodies up in there :)
I see what appears to be header flanges sandwiched between the headers and heads. W2 heads maybe?