Since it seemed like the parts swap is compatible, I took the liberty to swap parts with Vakil. As suspected by others, the neck joint on Vakil is a tad larger, but Garven's head does fit, albeit snugly. The hand swap is easy-peasy. The Vakil head on the Garven/Luke body is loose, but shoving tissue up there will fix it right up.
Dude Garven's head fits that ball joint? Jeez he must have a humungus melon. I think I just wait for the next Rebel III evo set and swap that.
AH the infamous Anton tissue shoving customization method. I still owe you royalties on that one