I'm Cummins swapping a '74 Duster, thought I'd share the progress.
when's the last time you were genuinely impressed with a turbo V8 build of a car?
Turbo cars never cease to amaze me, especially this one. It (was) a basic 360 with manifolds. Low buck build up, heavy car. 9 seconds. Different combo now but when it was a turbo small block it was super impressive.
Anyway, I really don't get the point of what you're doing. If you answered me sincerely then I have to really question your understanding of what is being discussed. What you are proposing to do is not logical and if you somehow follow through with it will be unsafe for a myriad of reasons, most of which have been outlined here repeatedly. If you're going to ignore logic and do it anyway then basically you're just looking for attention which is completely lame.
Understand that you are mistaken in thinking you can just cut out structural parts of a uni body chassis and weld them back together like nothing happened. That is a false notion. One you cut stuff out of the chassis, there's no going back. To repair structural parts properly, all the original spot welds holding whatever it is in place would have to be drilled out of the sheet metal and new or good used parts would get spot welded back in. The frame rails and cross members are stamped steel which is where they get their strength. Those pieces are generally not meant to be cut out and/or welded back together. Can it be done? Sure. Is it right? 99% of the time, no. Look through the cars being parted out classified forum. "Rusty frame" is probably the first thing you read. Once a unibody chassis is compromised, it's pretty much toast.
What I'm saying is that once you start cutting stuff up, the car is essentially going to be junk before you put the engine in. You admit you don't know what you're doing which only increases the chance of junking the car before you even drive it.
People will tell you to go for it or yeah, that's so cool man or it's your car do what you want and don't forget to take pictures but they don't give a rats ***. If you're happy turning what seems like a currently viable car into a pile of ****, go for it.