I can put this in engine modifications because the "builds and jackstand queens" section doesn't apply.
I put an LS engine in a 1999 Dakota R/T about 3 years ago (October, 2012), using my own fabrication for motor mounts and transmission mount. The base was an LY6 6.0 engine and 6l90 automatic transmission from a 2007 GMC Sierra.
It took about 6 weeks, and when it was done and tuned, it ran 13.4 at 103 consistently the only time it went to a track.
Next, I added hydroboost brakes from the same GMC Sierra. The truck already had rear disc conversion (also my own fabrication), using GM metric calipers. The hydroboost added huge stopping ability on the stock front and GM metric rear calipers, with 11 inch rotors all the way around. In my opinion, I would do this before trying to go to bigger calipers or rotors. It's pretty easy.
After about 2 years, it was time to step up. I removed the variable valve timing (VVT) from the engine, and chose an LS9 cam and LS3 intake. After tuning, the truck is estimated to make about 450 flywheel horsepower and would probably run 12.5 at 110 or so. This truck has not been back to the track, because it just hasn't. But HP tuners is pretty accurate at calculating fuel and efficiency, so those numbers are probably pretty accurate.
The truck has 40,000 miles on it since the work was done, and runs great. It has not had any repairs since it was built.
Here are a few pictures.
Picture of the finished truck. Yes, that is a carbon fiber hood. Note the Durango that I am building now, sitting in the garage.
Rear disc conversion.
Hydroboost unit in place.
As it sits now with LS3 intake.
How about a 5-lug conversion to use better wheels? I haven't shopped for wheels yet. Had to start on the Durango, which isn't cheap.
Twin turbos mocked up. No plans to put them on yet.