Well the upside is you have a lot of new parts on your truck! Although VZ's term "parts canon" begs to weigh in...
I had a '66 Olds Toronado that had me floored as to why I had to completely advance the timing to get it to start.
Changed out the starter with a stronger one from a Eldorado, timing chain, ignition components, only to find that the coil had melted due to incorrect wiring.
Glad this ended well.