Christian Sonnenberger
This Kit will stretch your Goblin by 28.5mm. Also it includes a battery tray with three hooks to perfectly set the center of gravity.
What you additionally need:
Belt 1587-3MGT-4 or similar
Carbon Rod 2.5 x 4 x 624.5
2x Flanged Bearing 5 x13 x 4
This tail fin is 15 mm longer than the original one giving your 105 tail blades the necessary clearance to the ground.
It directly fits the Oxy 5 without to change any other parts (apart from the bearing).
It's designed for a 12 x 6 x 4 flange bearing.