6 cyl. flat head.

Perfomance list : http://olskoolrodz.com/forum/printthread.php?t=9315

Pics : http://www.jalopyjournal.com/forum/showthread.php?t=213331
http://www.jalopyjournal.com/forum/showthread.php?t=446905


Hope this helps, my girl friend has a '58 Plymouth Suburban, yes Suburban not wagon with a 230 flatty.

,Cliff