[Oblarg]

I would be cautious about that motor placement, but for running the wires I'd recommend the usual judicious use of zipties.

For attaching the pistons, at the rod-end you'll probably do best to use a standard bimba rod-end clevis, and at the rear end you'll either want their pivot brackets or you'll want to push out the pin that comes standard (by means of a large bench vise - I've tried a two ton arbor press to no avail) and use a bolt.