Correct motor mount brakets
 

I appologize if this is not in the correct forum. I have a 69 GMC C/2500 that came stock with a 396. Long story short the 396 blew and I bought a 350 temporarily to keep it going. The guy I bought it from convinced me at the time to give him the brakets that bolt up to the frame and the motor, soon after I regret that move and now cant find any locally. Is there anywhere to get these ?