My guess is that it will be similar to the two gen 1 upgrade options which you can find on the build and price website. Ithink $595 and $695 for the gen 1 upgrades.Looks like the LTZ is going to be a little pricey. The only problem for me is the rims... Looks like there might be a 3rd rim option. Is there any photos of all the rim options? Also does anyone have an inside on the rim upgrade price on the base model? Thanks!