Last 10% takes 50% of the time

I had a very bad/stressful experience a few years after getting my '70 Duster involving removing the engine/trans and complete front end (subframe, suspension etc.) to swap in a fully built 360. I had never taken on a project of that magnitude and got way ahead of myself. I basically got fed up with how it ran with the tired old 318 and busted-up 904 so I blew the car apart without having a clear detailed plan and getting the new parts first. I was living in my parents' house which went up for sale while my car was still apart. I ended up having to get it hauled to an independent repair shop in that town when I moved an hour away and spent the next 3-4 months driving down on weekends to work on the car in that shop's parking lot. My main motivation to get it done was the fact that I was basically storing it there for free which I'm sure they weren't happy about and it was sitting out in the elements getting rained and snowed on.

I vowed to never again start a project without first having all the "new" parts ready to install. I may at some point take on a full "take it all apart and put it all back together" project but before I do I will need an appropriate place to work on it and a solid detailed plan of attack. I'm a perfectionist when it comes to the mechanicals but regarding cosmetics, body, paint etc. I don't care much. I'd much rather have a car running and driving than looking pretty but not running. I would be very hesitant to acquire another Mopar project that needs months of major work to get back on the road unless it's a screaming deal on a rare and highly desirable model. I just like to screw around and go fast and make noise. Hence why my Duster still has no headliner, no door panels, plenty of dents and scratches on the exterior, leaky wiper seals and I've had it since 2007... not sure I'll ever get around to addressing those issues because when I occasionally do have the time and money to put into the car I much prefer to improve the performance than make it look nice or feel comfy.

Some of these guys like @Josh owen are superheroes in terms of squeezing wrench time out of every day. There's no way in hell I'd be able to work a day job, take care of a family AND wrench on Mopars with only 4-5 hours of sleep. I have a hard enough time being functional on less than 8 hours. But then I also have some improvements to do in my personal life currently to get myself in a more "comfortable" position where I'd be able to go out and kick *** on my car instead of having it kick my *** and losing motivation. I mean I pulled out the 3rd member in my 8 3/4" to do a gear swap and sure-grip rebuild and it's already been a week with no real progress aside from gathering parts and tools, mainly because I've been helping my parents move (again lol) but still.