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

On my 74... I switched from generic headers, you know, the ones with 3 tubes that run under the steering linkage. Bought Dougs. I hung the headers with bungee cords while I wiggled the starter into place. The motor mount was unbolted and the engine jacked up. Clutch linkage undone too. It was no fun, I'm no spring chicken. This was on a 360 too. I bought 2 mini starters for when mine crap out. I think the 74 has more room too.
If you need a pitman arm puller, come by Finleyville. Just make sure you drive one of your Cudas.