1990pignose wrote:haha yea only if you wanna go fast and straight haha
^^ Don't listen to this guy, he has no idea what he's talking about.
Here is a link to a NICO thread that might shed some light if you're considering an LSx Swap:
zerothread?id=406947
The gist of it is this: The LS motor is much lighter than the RB motor since it's aluminum versus iron block, parts are infinitely easier to find since it's an American motor, almost any shop can work on it, it's more powerful and simpler in stock form than any RB engine, and you can buy a brand new LS1 from Jegs with warranty for 5500, so you can imagine how much cheaper used ones are. The LS is a fuel efficient 300+ whp engine out of the box, it's actually lighter than the KA, though the T56 transmission makes it about 50lbs heavier. The only reason to go with anything else is to stay with Nissan. Just my 2 cents, hope it helps.
Edit: to give you an idea about cost, one of the guys in that thread is building an LS1/t56 car on an $8k budget, that includes LSD, axles, exhaust, wiring, engine, transmission, and mounting kit. For that same price you'll get a pretty much stock RB and nothing else.