I've seen several approaches/attempts at doing a car feet style configuration for CW figures, and this is at least my easy mode way of pulling it off for the CW Prime/Menasor torso. Basically I used the spare stock feet I had left over after I installed the SND Vitalis kit onto my Prime, drilled into them and added some 5mm posts, flip flop installed them (left foot into right leg and vice versa), then boom, car feet enabled with full knee articulation due to the range of motion the feet have for alt mode transformation. Only works using 2 deluxe bots that share the same mold since the lengths have to be identical. Easy peezy fully poseable and fun mode to mess with!
They'd have a 5mm peg sticking out the front, which could easily be covered with something if wanted. I hot glued the posts in, so they aren't removable; this was necessary to make the combiner joint lock in more firmly when the leg bots are pegged on. I kept my stock purple Menasor feet intact in case the mod didn't work out well, and can throw them back on at anytime. My setup right now has the feet flip flopped in order to have the hollow bottoms facing the back in combiner mode, but that also can be covered easily if the feet are on their original sides. It's a very unintrusive mod that's main commitment point is making a hole in the feet for the pegs. I'd have probably tried some kind of clip on 5mm posts if I didn't have the spare feet laying around to avoid the drilling, but the spare feet did the job fine.
Can you post a side and rear view, please? I'm very curious to see how the combined mode cars are arranged to be feet.
Here's how I have it setup right now and it works fine (as long as every hinge is tightened), the plug is one click forward past vertical to brace the chest piece and hood in this position. I have some combiner port extender parts on the way to turn the CW plug into a true heel (which is the actual original plan I've had, but came up with the current setup because I wanted to test the knee pegs out). I have a different variation of this configuration for the Sunstreaker mold, but since it ends up being an overall different height than the Dead End molds I'm using, you can't mix and match the molds in combiner mode.
