It couldn't strangle the bike more than the stock cans and cat I looked at a single can off the headers they sound great this way ,but have just bought some Tors at a good price A$405 delivered as I wanted to stay with the two can (no not the bird) look
Stock R3T cans have a 25mm (one inch) outlet ,smaller than the outlets on the old 650 Triumph Peashooters, I hope the Tors are larger, I haven't received My Tors yet waiting ,waiting , sitting on the bike in the shed making Brmm,Brmm noises.
Do the old "cop" trick. With TORS, you can poke a stick (baton) right into the pipe, TORS are straight through, no baffles/cat, etc. And the hole is bigger, just no hair. (sorry, I couldn't resist)