Timing Chain Tensioner

Good morning all,
A couple three weeks ago I read a thread where the topic of installing a timing chain tensioner was brought up. Those responses where this was discussed recommended a tct for a magnum engine and it was a bolt on deal that would replace the plate behind the cam gear (IIRC).
Stupid me, I didn't bookmark it. Now, I cannot locate it by searching. I don't even remember if it was a recent thread or an old thread I ran across. Can anyone help me out with a link to it?
Thanks,
C