Autolite 437 - Autolite #437; hot heat range(H18Y); power tip/non-resistor; 14mm thread dia., 7/16'' reach, 13/16'' hex. Replaces AL82.  

Autolite 216 - medium heat range; std. tip/non-resistor; 14mm thread dia.; 7/16" reach; 13/16" hex.   (Crosses to Champ H10C,RH10C) (RJ12C)

Autolite 75 -
 
Bosch 7505 -

Bosch WR8EC Item#: NAPA BSH7508 /Thread Size:M14 x 1.25 / Hex Size:13/16"
Reach Length:.375 / Seat Type:Gasket

----------------------
Bosch W8AC = Autolite 425/417/Delco 44F Champ L90C - Lower heat than 437

Bosch W8AC NAPA  BSH7502 / W8AC
Thread Size:M14 x 1.25 / Hex Size:13/16" / Reach Length:.322
Seat Type:Gasket / 

W8AC = Motorcraft AE4, AE4C, AE4X
--------------------------

Champ p/u, 259 - Champion RH18YC (or some variation thereof) or Bosch WR9FC