RE: Picco .46 laying around
What does the Picco run? 9" prop.? Getting 120 from the Bobcat has been difficult for folks since it is a big airplane. I actually have the smaller version (Super Falcon-25) with a Webra-50 and Ultrathrust muffler which is a fun combo. This size lends itself more to your application.
Also, from what I have read on here the GP Viper seems more popular than the Lanier Predator. I think this is based on the structural integrity but I do not know any specifics.
Here are a few pics for you:
Super Falcon-25
Rifle
Whiplash
Phenom