BRAY added the diff-lock facility & drive-disconnect to the front axle and these feature in our 100+-part kit, otherwise the mechanics are similar to the Nuffield 4/65 based tractor with re-styled bodywork that found more favour than its predecessor with customers.The front weight is a different shape (heavier?) too.
Individual tools, glue, paints or sets of each required to build the kit can be securely purchased from our site.