Where model is the engine out of?
May need either 1st gen mounts or adapters to mount engine in correct position for headers to clear.

Was it complete with original alt, p/s, and pulleys attached?
Be easier to use them since everythings already lined up.
If not will need original 67-70 p/s bracket system when using 67-70 pump.

If 67's shifter asm is same as 68's, no need to change anything. At least didnt have to on mine.