My oil of choice is Joe Gibbs, they have a heavy zinc additive break in oil and a Hot Rod zinc additive oil for after break in and future oil changes, been great to me and my friends.
Turned out really good! I used to do that for a living and now i do it for customers I paint cars for.. It is honestly my least favorite part of restoring cars period! I would rather sand bondo lol,
The 2 door conversion is very do able but would be a 2 door post in the end, I have a 68 4 door dart and honestly just leaving it 4 door is great because they are always parted out and scrapped...mine gets alot of attention just for that reason
I daily drive a 68 dart sedan slant 6, I had my silverado for a long time but decided it was too new for me and the amount I was paying for insurance and gas I sold it.... Best decision I made the dart is cheaper on gas and insurance and 10 times cooler in my opinion.
But then again check out this picture looks like the rolled style but the box says fully welded...try and cross reference that part number with the system