Nice start. If you want to go for high level of details, I suggest to add some welds to this frame right now : it will be painful and boring to do it later, but it will really add realism to your work.
Well nice to see someone starting with a cage. I look forward to this... The Big Dodge.. this should be interesting. So far it looks good, Tom has a good suggestion too. He'd know I'm sure his Atom he built had lots of welds in it.
Wow.. the way you are starting out with yellow makes me really look forward to this even more. It means you have a plan ( I hope lol) that has some kind of theme to it, maybe even with fancy graphics on the side. Anyhow looks great so far. Look forward to the shocks.