Evaluate Timing chain sets

It's not that we want a tentioner to begin with.. it's more of me saying gee they could have designed that band aid piece of **** ..to be a better Band-Aid piece of ****, is all. lol
I ran a tentioner in my 340.. 2002..only after that piece of **** JP performance chain stretched out ..and I thought f**k I'll get my money out of it since is was only a few months old. When the 340 came apart that tensioner went in the cabinet and when I ended up needing to do the timing chain on my 96 Dodge 1500 I decided to go for a stock chain and use that tensioner since they were known to occasionally show up in those Magnum Motors so I heard ..never seen one!
Stock chain is perfect for it...and will stretch..so that's covered.
Mancini is not stretched it's tight as the day I put it in there and it will go back into the next 4" motor.