Here's shuttle 8019 now with a real fin instead of the missile launcher as suggested by u/Lordbricktrick and u/mcbaine37. I removed the launcher pieces and pinned the fin in between the technic
LEGO 8019 Star Wars The Clone Wars Republic Attack Shuttle 636pc NEW SEALED NIB 673419111829 | eBay
Amazon.com: LEGO Star Wars Republic Attack Shuttle : Toys & Games