The hole in your floorpan by the gas tank should have a grommet and gasket assembly. They are easily available from places like Classic Parts or LMC Truck. As for the brake parts, they are still available, but take your old ones in. Then hope that you have a knowledgeable person behind the counter that can use the "bible" antique catalogues. Took me 3 times to get mine, but finally found the right parts, work great.
1949 1.5 Ton 4400, 1969 c10, 1989 c1500, 1990 K2500, 2010 C1500 Crew
| 
