1) why 6.7 i bought a mega cab that was an oil field truck for 4,000 bucks. so i could not pass it up. i got 3,700 including the 1500 in parts after i sold parts from the megacab. 6.7 can spool a 66mm turbo like a 5.9 can a stock turbo pretty much.
2) im running the 1500 leaf springs cause the 2500 ones are about 3/4'' wider. i will be doing track bars for now in the winter going to a 9'' with a 4 link.
3) its not to bad to do the wireing just have to be yell to blow steam so i dont break anything lol. i have full wireing so kinda had a head start.
4) its easy man dont be jelious you can easyly do a 12v
05 sc/sb swapping a 6.7 cummins into it-project street truck
I've always wanted to do this to my 2003 1500 base 3.7 with 5 speed that I've owned since new (it has 90,000 miles now). I've always read that the 1500 frame is too light weight for the weight and torque of the diesel. Hope it works out for you once you actually get it running. I'll be following your progress.