i'm trying to figure out what i could do to my N/A ej25 to get more power that would be able to be bolted on to a new LGT, which i'm planning to buy at the end of the year

in other words, what modifications can i do that i'll be able to pull off, and bolt straight on to a new LGT?

I've got a crank pulley already, but other than that, i don't know what else would be able to transfer to the new car

any ideas??