If the parts guy chose them have them confirm they are for your truck.
I feel for ya. I had this sort of thing happen to me on my 85 when two things happened. The balancer belt broke but I did not know it and I "rebuilt" the weber carb. It never ran well since except after I put in the new carb. I've still got to dial it in and right now its not wanting to start easy.
I would slowly go over what you did standing there reenacting it to see what wires or hoses you may have knocked off.