Bolt on timing chain tensioner

Man you asked for it. You will get all sorts of stories. I have a 3.9 V6 with 225,000 miles on it. Bought the truck new. It has never had a chain. Still runs like a clock, no balls but what ever. I have a 360 with W2 heads I put one in when I did the car 15 plus years ago. Street car I beat on. About 15,000 miles on it now. Never a problem. I have built two 340 engine for friends. Both got one installed. I do not know have many miles they have driven them but I haven't heard them call me bitching. With that said, there are cheap ones and there are good ones just like any other part. Buy good parts and they don't have a problem.