Hey Forealz -
It's a bit of time and work depending on your connections with a local bender/boat-builder.
IMHO, You might want to consider a plywood design with bearings and steel gusset plates/rails. Much easier to build for a one-off, with no need for fancy CAD drawings to upload to the waterjet. Besides, if you can't do these drawings yourself, you'll burn up any savings paying the shop to do them. Be cheaper to just buy the Slee steel drawers...... I've got a bunch of pic's/links if you need 'em.
I decided to go aluminum, but haven't had much time to fab a set. Didn't make sense to add all that weight to a DD, to me anyways. Good luck man.