These are all 3 brand new in the box.  part number is FAN01041  .27 nitro Engines.

They are Vintage circa early 2000's. High Performance Race engines.  

.27 High Performance Race Engine w/ Pull Start
UNLEASH THE POWER with one of our new .21 or .27 Racing Engines! 
Fantom engines are setting the standard in the industry for performance, 
reliability and affordability. Our goal is to offer an outstanding race engine,
 while still maintaining a reasonable cost, which we accomplished with our
 latest FR21 and FR27 Series engines. This high performance .27 engine is 
packed with all of the high-tech features you expect in a racing engine. 
It's intended for racing, but don't be afraid to use it for back yard bashing, 
if you want to blow your neighbor's doors off. Nowhere else can you find
 this kind of performance, at this price.

FEATURES:
True ABC construction
Turbo design race ported crank
Knife-edge double bushing connecting rod
High performance 8mm aluminum slide carburetor / o-ring sealed
Skirted / double oil groove piston design for optimum performance
3 transfer / 1 exhaust race spec porting configuration
2-piece replaceable button style head type (standard glow plug)
6 bolt / 12 fin head configuration
Optional turbo button and turbo glow plug available
O-ring sealed rear plate w/ heavy-duty pull start assembly
Sleeve locating pin for precise port alignment
Mounts in same location as any standard .21 size engine
Includes standard glow plug
Includes highly detailed 26 page instruction manual
SPECIFICATIONS:
Exhaust: Rear
Carburetor: 2-Needle Slide
Crank: Standard SG
Pull Start: Yes
Horsepower: 2.81hp
RPM (max): 42,800
Bore: 18.5mm
Stroke: 16.5mm
Most common use: Monster trucks and 1/8th scale off-road buggy.