From the factory there was no boot used on this style transmision shifter. Only a seal under the floor pan. The parts book does list this boot from GM But I have never found an original truck that had one from new.
http://www.ebay.com/itm/NOS-56-84-Ch...FY0bZN&vxp=mtr
The hand brake boot is not reproduced , the gm part number is 3821076 1963-1964 series 20 and 30 hand brake and 1965 1966 C30.