What's been done:

Arms and Legs have been filled with apoxie to give him weight

Articulated hands

Articulation added on elbows that can bend forward and back as well as swivel

Head is on balljoint (Eye visor has been painted with glow in the dark Red paint!!)

Articulation done to back of knees so Soundwave can sit in a chair when tired from beating up Autobots

G1 cartoon style paint job for Soundwave, Ravage and Laserbeak

Rocket launcher has been fitted with handle so Soundwave can hold properly with articulated hands

Waist has been extended to give extra height and more Cartoon accurate (he's as tall as MP seekers like Skywarp!)

Shin panels have been installed so there is no gap in legs in the front.

Feet have been filled with apoxie on the sides for smooth look rather than the holes that are there from the factory

Custom painted and designed head to closely resemble G1 Soundwave

He does not transform due to modifications that have been done.