Oh. By mods, I meant that you will have to wire up daytime running lights that’s probably it for a viper.
Check the website I sent. It details the procedure. Make sure the cars had all its recalls done and you have a recall clearance letter from Chrysler. You’ll have to pay RIV $200 IIRC. File the title with the US customs at least 72 hours before import, And you’ll pay HST at the border. No duty because it’s American-made. Federalization in Canada I think happens at crappy tire still, you shouldn’t have to pay anything because that was included in the $200 you spent with RIV.
Anyway that’s the way it went down about eight or so years ago.