I need some input on a 1000hp 727 trans

That does look like the wide 71 and newer front clutch support. You can tell real easy by measuring the area where the bushing rides. If it's the wide support it'll measure over 1" wide. If less than 1" it's the narrow support.

I agree with Bob on what he recommended with 1 exception, the kickdown lever. Most aftermarket valve bodies have a specific band lever and that's what you need to use. It may be a 5.0, it may be a 3.8, the instructions with the VB will tell what to use. I'd replace all the stock servo's with billet servo's too.