This works great for the TL01/TL01LA cars as well. I've used it to lock the rear diff on my TL01LA. You'll also need to get either the Tamiya #53790 cup joint, or the Yeah Racing Aluminum front gearbox joint for M05/M05 Pro. I got the Tamiya part and found that I needed to drill a 2.5mm hole through the center of the Solid Axle to let the metal rod of the cup joint through. I'd say that with the Yeah Racing part, no modification would be needed. Other than that small modification, this part works perfectly. I now have a locked read diff on my TL01 drifter without messing around with glue or having to destroy original parts.
Now it so easy to change from differential to spool. With this Aluminum Solid Axle from Yeah racing all you need to do is replace the differential gear inside with this Aluminum Solid Axle and that is it. Here you go with spool gear. Easy to do isn't it.