looking for 5.7 to /6 k mounts....

Basically you have two choices. I know because I also have a '67 slant six car.

1. Make your own.
2. Swap out your K-member, and use the TTI/Schumacher mounts.

I have a complete blog posting about mounting options here:

http://drhemi.blogspot.com/

FYI, I was able to find a 73-76 K-member on FABO for 100.00. Good condition for something pushing 40.

Regards,

Joe Dokes