1971 Duster ... Clean roller .. ready for a build

Willing to trade it for a '02 Yamaha wr250-4stroke old man owned and pampered trail bike? Clean title and all. Never raced, just used with the family to ride around the desert. I'll be in Vegas this weekend @ MATSLV in my 'li red express...room to bring the bike. I have a '72 Duster project and my son would like one to build along with me.