Yahoo!! Wanted to share what I found that worked in case it will help others later on.
I got a Midwest Solutions Series SUV crate. Comes in 42" length with 30" height (just barely finagled that in by assembling inside the car) but is narrower than a normal crate so you can angle it if need be. Hope that helps!
Just a heads up, I have heard of these style crates folding in accidents. Anyone have any info they can find? Everything I research points to airline crates.