Super Rat 93B Tires

[1963corvette]

Hi All,
I'm having a tough time finding a matching set of tires for 93B Super Rat; front 3.00 19 and rear 3.50 18 Knobbies.
Anyone have a good source to purchase? Can't find anyone online that carries the front and want the back to match. Cheng Shin carries the rear but not front.
Thanks
Ron