Originally Posted by feldman
I know a guy who swears that his '06 LS430 UL is 6" longer than any non-UL and has more leg room in the back.Thanks.
He's probabaly just BS'ing you.
There were several U.S. companies that created lengthened versions of both LS400s and LS430s but they extended the wheelbase by at least several feet with the rear door size remaining the same as OEM.
Although it is very possible that long wheel base versions were built at the factory for special use but I doubt that one would have been certified for import to the U.S. If Ford can build Lincolns (the "Signature L") with a six inch extension for limo use, I don't know why other manufacturers wouldn't too.
Remember the rumored LS500L back in the mid 1990's? It was going to be a slightly extended LS400 with the V12 engine from the Toyota Century sedan: http://www.germancarzone.com/japanes...uxury-car.html
A lot of odd wheelbase models from foreign manufactures never make it to the U.S. - witness the variety of extended wheelbase E-Class and S-Class models from Mercedes which have never been sold in the U.S. but which you can see in diplomatic use, airport limo use, and to carry funeral and wedding parties in other parts of the world.