To convert your older truck to use the new front rims, the following parts need to be used: * #7854 Front Axle * #9880 Steering Block, Hex * #4449 4-40 Aluminum Locknut * #7856 Wheel Hex Adapters, OR #9892 12mm Aluminum Clamping Wheel Hex (qty 2 needed) * Hex wheels #7852 (white) and #7853 (yellow) work with the above combination of parts.