Get the 9266 gasket, you will need the 8021 bracket and get composite intake gaskets for a 360, if you ask for 318 gaskets they give you steel gaskets for an iron intake.

For the kickdown you need the upper rod extended an inch or so to make it work,It's not a big deal if you can weld or know someone that can- just have to cut it in the middle and add a 1" piece of similar sized steel.

You may need to rework the throttle cable bracket to move the throttle cable forward also.
If you can find a 80's 360 Van they had an adaptor on the throttle bracket to move the cable forward.