Studebaker Flathead

I too have gone the way of an Offy Head Studebaker 6.
The original cylinder head called for a Champion J7 plug, but the Offy requires a longer reach. Nobody at the local Parts Co can answer the question, I'd greatly appreciate a Plug number for this head

 

Hello.

If you measure your plug, and wanted reach, just put the number in here;
http://www.championsparkplugs.com/Search.aspx?ptn=Spark+Plug

K

 

Fantastic!!
My Flathead Thanks You!!

 

X2 ^

Thanks:
s_f_l