ok i have a 91na and i want to swap a more powerful engine prefer a twin turbo, but i am up for advice, what is best swap without being rediculously priced?! please help.

 

Twin turbo? 13B-RE from the Cosmo or 13B-REW from the FD. Not easy swaps at all (like swapping in the same motor). I'm sure someone will tell you all about it. Not ridiculously priced? S5 13BT. Stay away from Tiger Japanese. Look for Japan2La if you are serious.

There's quite a few things that go into swapping a motor over. Might want to research a bit more. And read the FAQ and search! This question gets asked a lot.