You have to be INSANE to have long-tube headers on a big-block A-body Mopar!

1) 64-66 engine bays are narrower than the 67-76 a bodies.
2) Chrysler engineers of that time were smoking dope to come up with 99% of the stuff we Love about being different as MoPar guys today.
3) Reengineering headers for 50 year old cars is not profitable- period. Especially for a market of Big block abody cars. Also too many variations to contend with. Run what’s already out there and suck it up or build your own. Sadly that’s the choices.
4) To the original poster- support the engine and drop k- frame. Sorry it’s a lot of work but it will be the easiest way to change the starter. Lord knows how long that original starter has been baking above that header. The “mini starter” will make a lot more sense once you complete this project. Let’s says on the slow side you take a weekend to complete this job- at least it will be done. Heck- your half way there now from what I’ve read. Take your time, work safe and enjoy this process. Fix things you don’t like for example a battery wire running thru the header. I’m sorry your dealing with bad engineering but your a “car guy.” Suck it up, it’s what we do. Lol!:thumbsup: you can do this!