Stormrider if your in the US, Sidewinder if your in the UK. both are excellent kits cast off real webley flare guns, and the detail pieces are excellent as well, you'd be happy with either.
i bought mine assembled , if you have the money in your budget I would advise doing the same , an added feature at a cost is the light and sound option which makes it go phew phew Boba Fett ESB EE3 Blaster with EFX - YouTube