This MOC answers the question of how you can turn the INT-4 Interceptor into an AT-ST. Since the Interceptor is practically the head of an AT-ST, a few extra parts perfects it. Keeping the ability to fly with its "head-wings", this MOC also adds Walker Legs, modified from the AT-RT of Lego's (75431) Star Corps Battle Pack. 

Dimensions:

• 4 in / 10.1 cm Long

• 3 in / 7.5 cm Wide

• 5.5 in / 14 cm Tall

There is also an XML file included for only extra parts not including those from the INT-4 of the Remnant AT-AT Lego set. 

Sources of inspiration: https://www.lego.com/en-us/product/imperial-remnant-at-at-with-int-4-75454 https://www.lego.com/en-us/product/327th-star-corps-clone-troopers-battle-pack-75431