Dionos even have a 1.5" rule that the head has to be below the top, making them among the shorter RF seats now
. Still nice and low profile, though. The Graco Extend2Fit at Target might be worth a look, I think that's the one the PP meant, or the 4ever or Milestone, also Gracos, low profile-ish, not too big front-to-back, and make really nice boosters later (Dionos become a booster now, but with a 50lb weigh minimum, very short height, and design that prevents the belts from retracting on the shoulder properly, aren't worth buying for that feature...).
Glad your crash was minor, but sorry for the inconvenience, ugh!