Replacing Silencer Tips
 

I am looking at buying a boat that comes with Corsa’s captain call plus system with the two silencer tips. What kind of work is involved in removing those two tips and replacing them? What brand / model should I go with that would be a direct replacement?

Would either one of these work?

http://eddiemarine.com/exhaust-and-a...lange-4-w-flap
http://www.imcomarine.com/cal_store/...nal-flaps.html

Thanks for the help.