quick s.plug question

Are the plugs from the turbo motor interchangable with the N/A motor?

the plugs will work, but its all about how well they work... platinums work well on NAs, but avoid them on the turbos...go for NGKs on the turbos.

I also forgot to ask if the clutch system on the 4g63 motor is interchangable with the N/A motor? Reason I ask is that my clutch need to be changed... I'm thinking about buying this exedy oem replacement clutch kit.. but it's listed for 4g63T .... it's the cheapest kit I could find... I only need it for daily driving.. but I'm not sure if I should buy it since it's not listed for the 420A.

what about iridiums on non turbos?