Question for US builders

[humble]

I'm inching ever closer to the start of my build, tentatively planning to place my order next summer during a factory visit and tour. I've done my initial build estimates but I'm trying to find any unexpected costs US builders ran across. More specifically, once you have made your final payment to Ultima, did you encounter additional import fees, US taxes/duty, transport fees or the like before the crate landed on your doorstep? I'm sure this has been asked before, but many searches proved fruitless.

Will

[humble]

This isn't my first rodeo and I can attest to the adage "project cars take twice as long to build and cost 3 times more than budgeted". The 4 most dangerous words to any build are "while I'm at it..." I have a more than a few non-stock upgrades planned, but it'll be a mostly cut and dry build focused on track days. Really my worry was having a large unexpected import or customs fee, because I've never imported something quite this large. Even the last step, getting it from the port to my house will be an adventure i'm sure.

[humble]

I already pulled the trigger, and put the deposit down on 10/31. Now i'm getting my garage ready and doing my research. I'd like to use a new LT4 supercharged crate engine since the price has dropped but I need to verify mounts, bell housing bolt pattern, and flywheel depth and bolt pattern are the same. I'm okay with a little fab work to redirect the intake, but I really don't want to redo everything. A crate LS7 is always a good fall back

Will

[humble]

Now that looks like a "fun" project I've been chatting with Chris Julian and I may rent his dolly for a short time. I have a big garage for San Francisco but normal by any other measure, so space is at a premium. Everything needed to build the Ultima will be at the house around the same time, and I'll have a team of guys working on it so I'm hoping for a quick build. I'm now trending toward proven solutions to make things easy, LS7 crate engine, g97 trans, and only minor mods, so there are no delays in the assembly.