Review on Cherry Bomb 7401 Pro Muffler by Don Santos

bought Cherry Bomb Pro 7456 2.25 16" long with 3" tips truncated 14" plus 2" silencer tips and wanted the 2 1 /4 slide "diameter pipe goes into the 2 1/4" ID on the Cherry Bomb Pro so I can use clamps, didn't go in, did the exhaust after the cat converter with a dremal tool/grinder/ Filed away to remove metal from the pipes.(which fitted into a Borla 2 1/4" muffler prior to grinding) and inside cb pro tips. After many hours (should have been a maximum of 2 hours of work), both ends fit. Email sent to company, no reply received. I tell others to buy this? I doubt it.