Thanks Crissy, no problem and
Thanks Crissy, no problem and I understand the mix-up. To follow up, yesterday I crawled under my truck and took another look at the undercarriage. I see scaly rust here and there but even the leaf springs look pretty good. Certainly does not appear that any item is in danger of failing or rusting through. I was unable to match the dealer photos to the actual rusted areas on my vehicle. I called my Toyota zone representative who suggested I take the vehicle in again and have the service manager show me the actual rust perforation(s) with the vehicle on a rack. He said there must be a least a 10mm perforation in frame for vehicle to qualify for the frame replacement. He said dealers are held to a very strict standard regarding replacement of the frame, and that before actual work is commenced a Toyota rep must verify the vehicle and damage. He said I would not be liable for fasteners etc that break during replacement. He also gave me his direct line in case I have any questions. I feel somewhat reassured now and I think I will follow his advice before I make the final decision.
Like you I plan to be a loyal Toyota truck owner for years to come. The frame rust is obviously an issue, but they are such well engineered vehicles otherwise.