07 Sportster Chopper/Bobber Frame

[YoDA]

I've been keeping my eyes open for a crashed bike which I can use as a doner for a chopper project--and last week I found one! Picked up an 07 Sportster with 4700 miles on it right here in my local area, so no shipping. The first thing I've discovered is frames for 2004 and newer Sportsters are hard to find. CycleOne has a frame, and so does Zero Engineering (but they're waaay expensive). Anyone have recommendations for a good quality frame for a resonable price for an 07 Sportster? Thanks!