Help.... I don't know what motor is in my truck

[griesel72]

I have always thought that the old 69 has a 307 in her, but i need parts, and wanted to verify before having some pimply faced kid at the parts store proving that i'm an idiot, so i thought i'd look it up. But come to find out, the number on the motor doesn't turn up in my book.

The number stamped on the right side head is:

V1219TXD

Can you help me??

Thanks
David