u will have 10 grand if not more in a ls1 240 swap..
http://www.hinsonsupercars.com/s-4-n...0sx-95-98.aspx
i like this companies stuff as well.
http://sikky.com/
they are fun and have power but you will end up spending a grip of money on suspension components (especially good ones) tires and rims.. and thats to have a stock ls1.
the 240sx was not designed to have a ton of whp or torque you will be welding/stick/spot the whole car.. bracing( cage) strut bars,fender braces,floor braces,sway bars..
than u have or should have things like breaks, 300x,skyline,350z,bbk
it can be as simple as put a ls1 in the car.. its just an unbalanced car at that point..