Just to clarify what @sogafarm said, the vehicles noted on the NHTSA list referenced above aren't, technically speaking,
exceptions to the 25 year rule. That is, you can't just go buy one of the listed cars in Europe (or wherever) and import it to the USA in the same way you'd import an over 25 year old car. If a car is on the list, it means that said car
can be legally imported, but only with caveats:
1. Cars less than 25 years old
must be imported through a Registered Importer.
2, The car must be brought into compliance with NHTSA safety regulations (usually by equipping it in a manner consistent with its US model equivalent).
Being on the list only means that someone has gone to the trouble of petitioning the government, and has succeeded in convincing them that it's possible to modify the car to meet US regulations.
Note that the list only relates to NHTSA requirements. EPA requirements are a separate deal. If the vehicle in question can be shown to have the same motor as a US model, with the same emissions equipment (EPA certified), then you should be golden as far as the EPA is concerned. If the motor is the same as a US-spec model but
does not have the same emissions equipment, it could likely be brought into compliance by swapping in the US-spec emissions equipment and retesting. If the car has a motor that was never offered in a US-spec car (e.g. diesel for a Landcruiser), things get more interesting. Less than 21 years old with a non-USA spec motor is pretty much a complete non starter. Don't bother trying.
While the NHTSA requires a car to be over 25 years old to legally import (without using a Registered Importer or modifying the vehicle), the EPA only requires it be over
21 years. Which is to say that it should be possible to import a car (from the list) that's less than 25 years old, but over 21 years old. It would need to go through a Registered Importer, and it would need to be brought into compliance with NHTSA FMVSS. But as long as the car is over 21 years old, the EPA will grant it an
exemption from Federal Emissions requirements (though it would still need to meet any applicable
State emissions requirements). Re: the Landcruisers on "the list", this would apply only to a late 80 series or very early IFS 100 series.
Also worth considering: None of this applies to models for which there was not a "substantially similar" US-spec version. So, for example, when it says on the list "1990-1996 Landcruiser", it DOES NOT mean just any old Landcruiser from that period. While it's not explicitly stated, it only refers to 80 series Landcruisers (for which there was a "substantially similar" US version). It does not apply to any 70 series 'Cruiser from that period. Sorry.
All of the above assumes you want to have your Landcruiser in the USA
legally. If you're unconcerned with legality, and are willing to accept the calculated risk of fine, incarceration, and having your car seized and destroyed by US Customs, then you can pretty much have whatever car you want. Easy peasy. Bring it in in a container, lie on the import paperwork, and hope you don't get caught. Register it in Florida.**
** please don't do this. or at least, don't tell anyone I told you to.