That is true, I am sure that the design for this began when two door tahoes were still available so it could be that they used the previous designs frame for the build up. It depends though. I am not sure how different the frams are between 98 and 99 as to how easily the 99 bodys would fit onto the 98 and previous' fram. For example, good luck getting an 88 chevy truck ody to sit on an 87 frame. Plus, the article made it sound like they took a new style chevy two door tahoe and cut the rear doors in and so on which would again hint towards the posibility of the Two door Mexican Tahoe. Who knows for sure. I always thought that if I were rich I would import a new style two door tahoe from Mexico (If they really do exist) and do a soild axle swap, lift and tires and cut the roof and make a brand new K5. Key words being, If I were Rich.
Ike