Yep only 99-01 SE V6 manuals, supposedly they didn't sell well or something so they stopped making them. I don't know what it's like in cold weather because I live in Cali and it doesn't get that cold. If you need more info go and check out
SolaraGuy , there's more info on solaras there (not many solara owners on this forum). It is getting harder to find the manual V6's, but there out there. IMO there's not that much difference between the two, but if you're going to do any performance mods, definately get the manual.