Sorry but I forgot to add one vital bit of info.
I'm going to get rid if the '68 wraparound side marker/turn signal light setup.

I have Dapper headlights with the turn signal built in so I'm going to cut holes in the '67 fender extensions and put in another style turn signal/side marker combo or just use the '67's parking light location.

So if the mounting points are the same, I'll just go with the '67 parts.

Thx and sorry for the missing info.