Jon Tofte
TVWBB 1-Star Olympian
Here's a guy dumping a worn but intact Summit 450 for $50. Unfortunately, it is natural gas. Looks to me like you are out of luck getting a LP manifold (and probably a lot of other parts), and Larry's experience with the firebox issues is, of course, legendary. So sad, because they look like such a really nice grill from Weber's best days. If I though I could salvage it, I would be interested. It could even be a candidate for conversion to a "flat top":
https://tampa.craigslist.org/pnl/for/d/weber-gas-grill-summitt/6704883918.html
https://tampa.craigslist.org/pnl/for/d/weber-gas-grill-summitt/6704883918.html