si engine swap

i have a couple quesitons before i take the plunge and purchase my first car.

wanted to purchase a 92 si and basically reduce as much weight as possible.

-carbon fiber hood
-new seats
-remove everything in the back
-remove any steel panels in the car
-change steering wheel
-and whatever else you got


and then i wanna get fimilar with my car. driving around cones getting as tight as i can to the cone as fast as i can.


THEN. what would be the best engine swap? best bang for my buck?
and how much will it costs?

id much rather swap then install turbo. cause i obviously get more boost if i install turbo later on my new engine.

thx