it would be cheaper to goto the normal powerfc version given you could pick up a set of std afm's pretty cheaply
but that would depend on how the pipe work is setup on your current engine, if the previous owner has remove all the ducting for the turbo to afm pipes
then it might prove to be more costly. the djetro PFC is the same price, but then you have to buy twin map sensors at $150 each new, so it will cost more
both should give the same result, so its really a case of do you have the std afm pipework still