Race small block stroker...what plug?

sbmmustang said
That same plug fits an LA head to.
I run NGK R5671A-8 in my E-85 440W8 head SB and 15.4 comp.
That plug is a 5/8 head.

in my 360 w2 i run autolite 63s that mustang is ihe baddest fox body i have ever seen got my buddy thinking ,my swinger devastates his 5.0