Ok so I just completed my transforming my
'Drift Axel' (which is pretty useless to begin with) into a
'Drag Axel'! Man this thing is damn cool! It wasn't difficult at all really, it's just like any other 'wheel mod'. Here's what I did:
To do it correctly you should really have a dremel or some kind of rotary tool. Reason being is that 'Bit/MS' axel is too long when the 'New' wheels are put on... it needs about an 1/8th of an inch to be shaved off so that there won't be any play when it's attached to the chassis. When I had put the wheels on the axel for a mock test, I noticed that the 'Bit/MS' axel was thinner than the 'Pullback' axel

. To remedy this I wrapped the ends of the 'Bit/MS' axel with 'Plumbers sealing tape' to make a snug fit before gluing them on. Glue the new wheels to the axel, give it time to dry (I gave it about 12hrs.) hook it up and have FUN!
I do regret to say that the front wheels didn't turn out so well though, upon removing them from the pullback knuckle my hand slipped resulting in a mangled wheel

. Oh well I'll have to get another pullback and try, try again.