Need help, can't find parts.

[71chevymike]

Hey guys, i'm new to this forum, and i've been reading alot of your threads, great info. I am working on a '75 GMC Gentleman Jim. I need some parts and don't know where to find them. I was hopeing someone here could point me in the right direction. It has bucket seats, and I need the driver side seat frame. I also need the turn signal lever with the cruise control button. These are two of the parts I need that I can't find, any help would be appreciated. Thanks in advance.