not sure about this cause i don't remember how it goes but i'm pretty sure the 2g head flows better than the 1g and the 1g block is better because it's a 6-bolt. so i don't think it would be worth it. but someone else with greater knowledge than me should back me up on this or correct me.

1997 Mitsubishi Eclipse GSX: K&N Filter, John Sheppard built transmission with GVR4 1st gear, autometer boost gauge, "free mods", Greddy type-s BOV, broken shifter