In the case of these forks, it's much less a matter of the grade of steel and more about simple geometry and physics... a fork is a horribly weak structure unless the open end of it is supported (in which case it's no longer a fork now is it)... even with the same low-grade metal the stock forks are made of, this mod will make the assembly way stronger.

I think this mod will also reduce the occurence of stock outdrives and dogbones popping out... might even make the DF03 universal joint shafts upgrade unnecessary (although they're so choice anyways, so much smoother)... speaking of, when reassembling the cars with the new chassis's, the spacers I told you about are no longer necessary for the DF03 shafts... points to the fact that even before the old chassis's broke, they were distorting (DF03 universal shafts were installed before the chassis's broke).

As a pointless side note, I'm sure the Tamiya engineers would have loved to have the forks extend into the chassis, but it would have meant a nearly impossible tooling issue... very complex "side actions" (aka "slides") in the injection molding tool would have been necessary to form these holes in the chassis.

If and when you do this mod, let me know how it goes.
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