A little late to comment since you have made up your mind, ived used them on almost everyting with a added oil provision and esp on my 410, ive had it apart 3 times and have seen no need to replace it.
The tenisoner uses 3 bolts, I drill the tensioner for what would be the 4th in the block as it goes into the crankcase, oil comes from there, runs down the front channel of the tensioner and right on the chain in the contact are of the chain/surface.
At over 7500 often I show little wear, mainly I use them because of align bored blocks, it takes up any slack vs hunting down a diff chain set.
Ive seen many nice builds snap crackle and pop on decel. ive notived ones with the tenisoner stay more stable.
