Could anyone recommend a simple, clean design 3" diameter rocket kit for a 38mm motor that features a 4:1 or 5:1 conical cone (essential), payload bay, with TTW fin mounting? I'm looking for something around 40" - 50" in length resembling a basic minimum diameter vehicle. Fiberglass tubes + cone okay. I imagined going scratch but thought I'd first ask the Forum community if anyone knows a good match. Thank you!