Just had a look at the Lull t bird, looks like Lollar pickups or Thunderbucker ranch, Warmoth body and neck. A 13 degree paddle neck, with a choice of jazz or P profiles. Hipshot do a very good 2 peice bridge, or the Gibson replacement for more sustain. A Badbird bridge is a direct replacement for the original Thunderbird bridge but don't advertise a price. The last time i checked the Lull bird was £2500+ but to get all the parts would be $295 for the body then $170+ for the finish, $205 for the neck and $65 for the finish, $400 for 2 Lollar pickups or $360 for the Thunderranch which includes the pickup rings that the Lollar dosen't, $180 for the 2 peice hipshot bridge and $120 for the ultralite machines. Customs would probably charge on everything and you have to find someone to shape the headstock, templates are available and quite cheap and put the whole thing together. Not the cheap option but would produce the same product for about half the price.
Never quite understood why anyone would spend out of a Fender based design from Sadowsky, Lull ect when buying direct from Warmoth and getting a luthier over here to assemble it gives the same product but for far less money.