I am building a HPI Blitz ESE Pro Flux kit and want to make it waterproof inside. I plan to get the waterproof receiver box from hpi but the known radio/receiver set that is usaully matched with it is sold out everywhere. I was just wondering if anyone else knew which other sets were compatible or different routes to take all together. Thanks.

You can put just about any receiver in a balloon or male birth control device, tie it off around the wires and you'll be as water-resistant (Nothing in RC is truly waterproof) as any setup out there. In Europe, they race in the rain by just taking a few basic steps like that.

Ok sounds good thanks for the help/tips.