CR
CR Racing | Snowmobile Components Everyone Wants is very nice, but i have heard a lot of complaints from guys wishing they had gone a different route, CR tunnels are mass produced now and the quality has gone down along with quality control, the chrome paint tends to wear off after a while too. Van Aumburg
Van Amburg Enterprises would be a better bet in the long term, there turn around might take longer but a better product, CR probably has tunnels in stock and could ship the next day. Looking ugly isn't so bad, if you can stitch it back together until the end of the season i would do that, your replacing it later anyways to you can toss it when ur done, then for your summer project get a new aftermarket tunnel. If you do the tunnel swap now you might miss whatever of the season is left, i hung up my tether cord after Yamafest.
Tunnel exchange is very long and involved process, if your familiar with your sled and handy with a wrench you could probably do it in 2 days or so, less if you had help.
Good luck !