Adding timing chain tensioner

All good suggestions. This is the tensioner being used on another build. The guy said while it's not necessary it does keep the chain tight and timing on point when the chain starts to stretch. I'll decide later if I want to add one to a Cloyes double roller. Not sure there is a right or wrong, just a matter of preference.

https://www.summitracing.com/parts/clo-9-5387