4g64 DOHC..

I talked to a friend of mine that owns a performance shop aroud here.. he suspects this idea would a hassel to tackle. He says I wouldnt be able to use an older dohc setup , but a newer jdm dohc setup. As someone told me .. the evo 4-8 dohc setup would be an idea but still it would only serve for about 25-30hp gain and the cost would be something like 1500.. so naturally he says to just turbo charge it , which I cannot do just yet..

Just wanted to see what you all thought about what he told me.