Coastle 64 5/6
Based on the low height indicated by my first guess I was feeling confident about West Coast Racers as my 2nd - when the first 4 went green I thought I'd nailed it.
Flight of Fear (KI) was my next guess and from the result it seemed obvious I'd got the correct layout and was now picking between "clones" (no idea if the stats are wrong or if there are in fact trivial differences between them). I ruled out the KD version on the grounds it probably is exactly the same so consulted the RCDB list for the names of the outdoor ones I didn't know off the top of my head.
I then guessed wrong with Jokers Jinx.
So yeah. Not as infuriating as the batman clones the other day but still incredibly hard to solve if you don't get the manufacturer quickly