Hey I am new here also, but I like what you are trying to do! I have been running my Hyper Pak in my 67 Barracuda for 20 years now. I made linkage with the cable stuff. I just bought a 62 Lancer wagon and I am moving my slant into the wagon. I can send pictures of what I did if you think it will help.
If you have the original exhaust for the hyperpak, I'm still looking for better pics of the brace that mounts to the front header and where it bolts to. Jim