Does this 360 seem like a good deal?

I found this for sale for $2500. Supposedly has 6000 miles since it was rebuilt. The rings were also gapped for NOS, but hasn't had NOS run in it. Does it sound like a good deal? Seems like it to me. Does 420 HP sound like an accurate claim? Thanks, Dave
P.S. Thanks to those who talked me out of trying to build my 273, if there are deals like this on 360's.