RE: Super Sportster twin...
The Giant Twin Sportster is alive and well on the way.
Set up for a pair of OS 91 Fourstrokes, but I am not sure what the single engine performance will be like, so I designed it to be upgraded to 120 FS if needed (will accept up to 16" prop).
Nacelles are detachable (fits like a fuse with dowels and wing bolts) and can take a 16 oz tank.
Gear is fixed and tricycle.
Should be flying in 2-3 weeks.