'68-'75 mix. What should I watch out for

[Birddog1]

i am building a 68 dart. I bought a 75 v8 junker for parts. I am putting the 75 suspension under the 68 with new components. I chose to do this because the 75 has some benefits that I like, spool motor mounts, front discs, big bolt pattern, and a better rearend. Rear is rebuilt and all new steering and suspension stuff. Is there any thing I'm missing that I should watch out for.
Thanks to all
MRO

 

[RedFish]

Most typical scenario, the issues arise at keeping the OEM power or manual steering instead of using the later model power steering. The center links, pitman arms, and idler arms are different.
If you use the later model power steering and link components you still might need to change the box coupling on steering shaft, keeping the earlier column.
Less typical issue... The later K member was cut away so that sway bar could route through the middle of it. Thus its weaker. Some have removed that K only to find it warped and/or spread, wont bolt up. Good luck