What sort of spark plugs ?

[Fred/Belgium]

I have a GTD40 with SB302 and Edelbrock headers (around 380 HP)
Ignition. MSD Wires
MSD PN857 distributor
MSD Digital 6AL box
Carburators: Weber IDA 48

Actual sparks: Autolite AR3934

Looking at a bit hotter sparks for road usage (a bit too rich)
Can someone advise me with sparks to recommend ?

Grtz
fred