Skull'amma:
Digging through my Bits Boxes, I found some left over Battlewagon pieces
and used those to create a Troop compartment towards the rear for some Boyz.
The Skullhamma Kannon is made from a mix of parts from the original Stormlord
kit, Bommer, Trukk and Stompa. The main barrel is plastic tubing from
thermal till reciept rolls! (Space Marine used for size comparison.)