64 kiwi boni

JustA my two cents . Your 750 straight out of the box  is too big for the 400 jetting will be wrong 
you should really be using a 600 to 650 max cfm edelbrock 
unless you have the motor set up for racing 
start at the beginning with the basics like the guys have suggested , but chat with the team at Edelbrock Would be a wise move … or google the formula for how many cfm your motor should have 

Aaron, this is what i am looking at buying for my 63 safari project.....
https://www.mpbrakes.com/product-category/pontiac-bonneville-1963.asp
but i am sure the guys will see your post and add their thoughts 
wrongway is currently fitting 4 wheel discs to his 63 grand prix 

I used long branch cast iron headers !!  Wayyyy better than tube headers . And heaps of room !!!
fitzy used headers … sure he will pop in and tell of his experience 

https://pontiactripower.com/products/long-branch-d-port-factory-headers-1960-1970-big-car-catalina-bonneville-plus-many-other-applications-additional-shipping-charges-will-apply

Paul last Indian is bang on, and your bang on for your cars that run tapered bearings.
 the 61 having ball bearings, each bearing presses into the hub and shoulders on the hub, as long as both are pressed right home, thats all you have to worry about ( along with packing the bearings with grease beforehand) 
the flat washer and castle nut are only ever going to clamp the inner section of the outer ball bearing, so you cant stuff it up no matter how firm you hand tighten that caslte nut.( unlike a tapered bearing that you CAN over load) 🙂
soo..... castle nut up to firm with a spanner, if the pin hole lines up, jobs done! if it doesnt back it off to the next hole back.
Just spin the wheel to ensure its free and happy, pull push the wheel holding top to bottom to make sure there is next to no slack. 
jobs done! 
but just like i said, do a few miles, jack her up and re check that you have no slop. 
And !!!! go drive the wheels off her !!!!

Hay Paul 
first call you should make is to Dave at Pontiac world, Dave is in nsw 
https://pontiworld.com.au/usgmsp/
👍
Now where’s all the pictures of your new baby ??   
I am not sure what the ozzy dollar is doing but our kiwi dollar is wayyyyy down to 57 cents against the usd at the moment ..
not a good time to be buying from USA ! 

yes your right JustA.....
Jim, my be a good time to upgrade your old externally regulated alternator to a in built unit, way more robust and tidy's up the engine bay nicely 

The other thing you could do is find another bird and note how the hoses lay, if your is the same as the video 
I see 2 hoses are bigger so that halves the guess work 
see if you can get all four hoses to lay naturally parallel to each other , this may give u a clue 
also note if the connectors are the same 
you may find all four are different (that maybe wishful thinking) 
worst case , you have to trace each hose to we’re it goes 
first clue , one of the bigger pipes off the pump will be the flow line to the fuel rail 
one of the smaller pipes will be the return line from the pressure regulator and I expect at least one of the pipes is a vent line