My hope for this body of work offers a helpful frame of reference for most customizers looking to work with model kits in the creation of new Transformers figures. Feel free to add to it at any time here. Scales are based on a replicas size in relation to it's real world counterpart. This tutorial is not meant to be taken as an exact guide to what anyone can or should build, it is only meant to give a rough outline on scale in relation to main line figures. (So please, don't ask why I would suggest anyone re-shell a Mustang onto a Mustang). Up first we have: 1/32 scale automobiles Here, I'm using a 1/32 scale Mustang kit to show it's size in relation to the exact same make and model of car. The 07 movie Barricade is exactly in a 1/32 scale. You can assume that most makes and models of two door model kits will align with this scale to either make a direct re-shell or at the very least, offer parts to be used within the framework. Classics Red Alert is also in exact scale to the 1/32 model making a direct re-shell possible. *Please note that the most important dimension you're looking for is the width. If it doesn't fit within the width, a re-shell is unlikely to work or will need compromises to complete. Length can be shortened or lengthened in most cases.