Housing for Nikon D40x?

I am looking at getting a housing for my Nikon D40x. I will initially
start with the Nikon DX 18-55 AF-S lens but will add a 12-24 AF wideangle later.

For a complete system (housing, port, ...), what would I need to order
from your dealer?

thanks.

The Nikon D-40 housing is #6804.1 which includes handle assembly but not lens port:
Underwater Housing for Nikon D-40, D-40x
Both the 18-55mm lens and the Nikon 12-24mm lens can be used in our #5503.50 standard 6" dome port.

Alternatively, the 8" dome port (part of our "modular" port system) will provide slightly sharper definition around the edges of your photos, especially with the 12-24 mm lens. For this you would need the #5510.45 dome assembly plus the #5510.16 port body for your 18-55mm lens AND the #5510.22 port body for the 12-24mm lens. See the modular port system here:
MODULAR PORT SYSTEM

The SubStrobe DS-160 is a great strobe for both wide-angle and macro photography. Strobe package #3944.90 includes strobe, arm, charger, and sync cord to attach to your system:
IKELITE Substrobe DS-160 digital

Regards,
Jean / Ikelite
IKELITE Underwater Systems

Thanks!