Hey Dan, need a bit more info on a couple of things.
Need 4BB throttle bracket
Is this a MOPAR specific bracket or can this be fabbed up/use aftermarket?
Need water pump bolts
Do you know the size, thread pitch and length?
accelerator linkage
Factory or aftermarket? If aftermarket do you have a part number?
440 coolant hoses from firewall to block (A/C car)
The heater hoses are just bulk hose, just need a diameter and cut to length.
1 U-joint
What's the exact application for this? Year, make, model for the u-joint or is it custom? (Sorry, my knowledge of MOPAR's is, relatively, limited)
727 trans dipstick (Which one does MoparDave recommend?)
What year is the trans?
Carb 5/16 bolts studs
Is there going to be a spacer between the carb and the intake? If so, how thick is it?
Steeering column retaining clip?
Do you have a pic of the clip?
10 long wheel studs
How long do they need to be exactly? I believe these are sold by size rather than application?
Positive battery cable
How long does it need to be, and what gauge wire is preferred? (2 awg, 4 awg?)
And good call on the exhaust. 2.5" is the way to go. If you ran dual 3" the car would lose a lot of low end torque.
One 3" pipe flows more than two 2.5" pipes. -Pete.