Those must have been reboxed because they are not the Triumph TOR's, the TOR's have brackets (4) that are welded to the muffler but no holes, the brackets have the holes. When you take off the TOR heat shields they look like crap because the fronts are very angular, Canucks look much better than the stock TOR's.
Like RMAK said they look like Hyde's which are really just Meriden Daytona reproductions. If that is the case you got some great mufflers though.
As far as passing power, I recently went on a trip through the southwest and my friends on Harley's passed every vehicle that wasn't doing 80mph and the Scrambler kept up with no problem, looked down once to see the speedo reading 105mph. So the power is there in it's own way.