The 450's were only made in '86-'87. And are definitely sought after.
Personally, I'd get it running, clean it up, and sell it as is. I doubt you'll get alot more for the trouble of chopping it, and a chop will have to go to someone who wants that style. Where the stocker can be whatever the new owner wants it to be.
I don't know the exact market on them, or the market in your area. But down this way (in Southern Louisiana) the 250 rebels in similar shape will go in the $1000-$1200 range. If it were me, here, I'd start at $1700 or so and let somebody talk me down to $1500 or so.