Projects Gmc 270 weak spark.

Hey gang.
I need help.
I have a 270 gmc in my box truck that I need running so I can move it to the front of the house.
Ive been trying to start it for a couple of days.
Its been sitting for 2 years.
After I changed so many condenser,coils,etc it fires but won't run..
Im hoping I can get a list of where to get good reliable parts for this thing,,found out that all stores have cheaply made parts..of if someone has a rebuilt distributor/carb i could buy.
That would be great..
Thanks in advance