Just picked up a new M41 (green) last weekend. I've read a few threads here and will do a bit more research before upgrading. Sounds like the aluminum cooling jacket is a good piece. I've also seen the dual pickup rudder mentioned a couple times. Never saw any mention of how the cooling system gets re-routed after install though.

I *was* thinking about using some 3s 3000 75C packs to start but after reading up a bit it sounds like I should get packs about twice that size.

I will also be looking for a good prop for it to replace the plastic one.

That's it for now. Have to get the recovery rowboat going before running it for the first time.