yes, the original 70s M-400A full cut-off was made in 400W MV (and MH too), though i've only ever seen HPS versions. Would you like me to email you the spec sheet? It's a 1977 edition with the M-250R, M-250A, M-400, M-400A, M-250R FCO, M-400A FCO, and M-1000.