I see Classic Motorsports magazines at the Los Gatos Borders all the time. I'd imagine the SC Borders would have it as well.
Also, note that the CSX has a 428 with estimated HP around 340. I'd imagine that a SPF with a stroked 351W would pump out more HP than that.
www.classicmotorsports.net is the web site for the magazine. Worth subscribing.
DD