Just came back to the city to pickup some parts deliveries. Customs is sure a major pain when importing from USA. If anybody is importing from the USA ,so far my best results have been when items were shipped through the postal system .UPS charges for brokerage seem to be excessive. Well here are the pics I haven’t finished all the tubes and triangulation is still to be added but because my build is so different, I just had to put it on the floor and look at it for a while. I was originally going to use Toyota supra front end (has same 5 on 4.5” as my mustang rims), but parts are really hard to get and I got a good deal on some aluminium hubs and a wilwood brake kit so I am going to switch to Mustang II spindles.
Some of the suppliers south will do extra paper work to expediate through customs and brokerage, for a fee, I believe Speedway is one for example, there may be others.
It doesn't hurt to ask, but you will have to compare the fee they charge to what the UPS/brokerage people might charge and if it effects delivery times at all.
Myself I am lucky I am just across the Border and have the use of a shipping office, so I just pick my stuff up and usually breeze through customs without paying duties and what. It really helps if you can tell customs your spindles are for a 30 year old car as opposed to the broker guessing in his favor if the shadow of doubt exists as to the intended use..