spark plug ?

my 93 sc has recently developed a miss under boost, so im going to do plugs and wires, i ordered some taylor wires from summit racing but not sure about plugs i know most people use the autolite double platinum app5144 or motorcraft double plat. my current mods are ported early model sc and 5% od. and full exhaust, i have a late model sc (s port) and mp plenum that im going to put on down the road, it needs a new coupler, so im thinking i need to run a colder plug for these mods?

Autolite xp103 iridiums, no question.

Also make sure they are gapped to spec, these car,s blow plugs out like candles.

I've used the NGK iridiums Spark Plugs 7316 and gaped them to stock. I've had them in my 95 for eight years. No plug issues.
Use the platinum ones if you want to change them more often than 100k.