I got a little suprise the other day visiting the Autolite spark plug site. They have a listing for 1957 392 hemi's. Part of the listing states a 3/8" reach plug instead of the more familiar 3/4" reach plug I am used to. SO I asked their tech support and sure enough the reply I got back says their catalog shows this situation. Anyone familiar with a 392 with a 3/8" reach plug application??? -- Paul Holmgren Hoosier Corps #33, L-6 2 57 300-C's in Indy