User blog comment:Callico Jack/COPPERHEAD UPGRADE!/@comment-4468389-20111107234242/@comment-2155069-20111108010832

You are able to change the upgrade you get. This picture shows a ship with the Skull and Crossbones IV upgrade. This ship can change to Copperhead IV or Fortune Hunter IV (as the icons show), or it can downgrade to reinforced III or Cargo III. Streamlined and Firestorm are not available changes for this ship. The player would have to either go to Cargo III or Fortune Hunter to be able to get to Steamlined or Firestorm. It seems that you can only move to tracks that are directly next to your current track. Each time your make a change you have to pay for that change.