Too cheep to build a motor with a chain then why seek out the 5.7 liter iforce v8 which is a chain? You post made no since at all. Personally I would rather have a chain because there is little repair work done like water pump timing belt's etc etc...Our company has had two tundras that the owners drive as company trucks. Well one of them got passed on to a son of one of the owners. Neither owners are mechanically inclined at all.
I am looking to replace my T100 with a 2004-06 tundra and was snooping around in here an was very socked to see the 4.7L had a timing belt. Even more so to find out one of the company tundra's had 155K on the timing belt before it was totaled. The other is going to the shop per this web page for a timing belt replacement. It is at 170k. Needless to say they both where on borrowed time.
Long story short, thanks to all that contribute. You may have saved someone a lot of money. I will be looking for a 4.0 or maby a 5.7 in a newer one. If Toyota is two cheep to build a motor with a chain they should pay for the timing belts