hello all

i'm looking into possibly buying a sienna (04 or 05 most likely). i would appreciate your general comments about the vans, especially about reliability issues. i've run into some unusual comments about toyota quality (many more than i would have expected). i'm not so worried about what may happen (anything can break on any at at any given time, right?) but more about what is actually known to happen, especially on 04-05 models.

i also wanted to know if anyone has done any successful mods in terms of improving MPG. K&N filters help? maybe gutting out the stock airbox? pipping in colder air? headers are apparently not an option but i did find a couple of options for free flowing catalytic converters. i don''t want to transform my future minivan into a noisebox and/or a big civic but i really would be interested in some of these mods for improving MPG - thanks

alfio