>>95964119
Magnetize the rokkiteer and slap the spare arms on Beast Snagga body. The gunner and some of the slugga boyz from the new boyz kit might be chunky enough to slap wrecka arm on, the shoota and old boyz bodies however were too small.
There're also some wild option like the AoS new ardboy, they're roughly the same height as Wrecka krew but much more muscular, they'll be holding the hammer in 1 hand, simple conversion job.