na, your wrong... the 2GNT is the 420A from Mopar... a DOHC neon motor...

the Spyder though, uses the 4G64, 2.4L mitsu motor. Its entirely possible to swap the 4G63 head onto the the G64, the only problem is that the coolant passage holes dont match up perfectly, so you might have to drill extra coolant passage holes into the block to match the 4G63 head. but as far as i can remember, it will drop right on. but i dnot know if it has to be the 2G 4G63 head (it might, since its a 2G motor in a 2G car) or if a 1G 6bolt head will work or what.

hes better off using the 2G head anyhow, its superior; fluid dynamically speaking.