whats best to go for?

i want big power in my ERST, which do i go for?

i would be buyin 2nd hand as i am not made of money

what would the differences be between the 2?

and what work would need to be done to the car to have it fully up and running

(my car is still on MFI)

the engines i am interested in are, jon S2's old 2.1zvh and dude sweets 2.0 16v

cheeRS