I have been surfing the web trying to find which Chrysler IFS works best with the '56 f100. I hear Volares/Aspens, Cordobas with original V8 but what years? I read 84 & up 'G' body with V8 but when I research that I find none with V8. I read the 76-80 Aspen/Volare with original V8 but they are'nt designated 'G' body. So what models and years have been used? In my Classic Trucks magazines I get every month the effies that have Volare IFS dont mention what years. If it has to be an original V8 then would Cordoba, 5th Avenues, Diplomats, Grand Furys have the right IFS and again, what years? I'll continue looking for answers on the net but I know one of you guys has all these answers. Thanks in advance.