I have no idea where mine is nor do I care. What I did since the last wipe is this.
Sidewinder:
Sell all internals and buy cargo racks. You can max at 10T
Get some cargo missions as they pay a little more then hauling yourself.
Haul until you can afford the Hauler
Strip that down and install cargo racks. You can max at 20T
Repeat process until you can afford a Type 6.
I have no experience with the Adder, so I cannot comment on that as a next ship from the Sidewinder or its progression after.