Sorry chaps , is a multifuel stove install a realistic proposition in an opening 810 mm h , 650 w and 340 deep , clay flue centre about 240 mm back from front , no limit to hearth size , room 60 cubic metres,
Cheersb
Doc j has simple diagrams with the required clearance.
Compare these with the size of the stove you are planning, and you'll have your answer.
Somthing like the morso squirrel is a well regarded small stove. It's cast so you can't run it as fierce as a welded one, but all the parts are about the place. They're popular with boating folk.