what spark plug temp? Cummins 528 crate hemi?

Any thoughts on stock 528 crate hemi? running tti headers and hp 4150 950 carb,
thanks

Mine has Accell 113 in it.

according to this website I found it cross to:
Possible spark plugs:

NGK: BP7ES
NGK: BP7ES-11
NGK: BP7EV
NGK: BPR7ES
NGK: BPR7ES-11
NGK: BUR7EA-11
NGK: R5672A-8
NGK: 2357
NGK: 2412
NGK: 3355
NGK: BP7E
NGK: BP7ES
Accel: 113
Accel: 113
AC Delco: 41XLS
AC Delco: R41XLS
AC Delco: 42XLS
Autolite: 4252
Autolite: 52
Autolite: 53
Autolite: 62
Autolite: AG22
Beck Arnley: 176-5075
Beck Arnley: 176-9054
Beck Arnley: 176-5164
Beck Arnley: 176-5165
Beck Arnley: 176-5166
Bosch: W5DC
Bosch: W5CC
Bosch: WR5DC
Bosch: W5D
Champion: N7YC
Champion: N9YC
Champion: RN6YC
Champion: N6YC
Champion: N279Y
Champion: N279YC
Champion: N65Y
Champion: N79Y
Champion: N7Y
Champion: N7YC
Champion: N7YCC
Champion: N7YCE
Champion: N7YCX
Champion: OE010
Champion: OE046
Champion: UN79Y
Denso: W22EP-U
Denso: W24EP-U
Denso: W22EP-ZU
Denso: W22EPR-U
Denso: W22EPR-U11
Denso: W22EPR-S11
Denso: W22EPU
Denso: W22EPU
Mighty: M4G22
Mopar: 4339487
Mopar: 4106122
Motorcraft: AGS12C
Motorcraft: AG22
Prestolite: 14G32

Start with Champion RC9YC If that proves to be to cold try the Champion RC12YC