Look at the Penturbo.com -67 DHC-4 re-engine.
WEIGHTS
Design Take-off Weight
Design Landing Weight
Maximum Zero Fuel Weight
Maximum Payload
Maximum Fuel
(Internal Tanks)
The following is a summary of the performance data that applies under ISA conditions at the design gross weight of 28,500 lbs. Takeoff and landing distances are given at sea level, zero wind, and from a dry level surface.
TAKE-OFF AND LANDING: SHORT FIELD TECHNIQUE (STOL)
Aircraft Operating Data – PART 8 Charts
Take-off (flaps 25º, both engines at T.O. power)
Ground Run
Total distance to clear 50-ft. obstacle
Landing (Flaps 40º)
Ground Run
Total distance from 50-ft. obstacle
TAKE-OFF AND LANDING: AIRLINE TECHNIQUE (FAR 25)
Take-off (flaps 7º engines at T.O. power)
Ground Run
Total distance to 35-ft obstacle
Take-off (Flaps 7º)
One engine inop. at V1 to 35-ft obstacle
Landing (Flaps 30º)
Ground Run
Total Distance from 35-ft. obstacle