There are a good amount of guides on the internet on how to do an LS1 swap, just most of them aren’t on JDM based boards thanks in part to a general attitude that JDM > *, and also to the fact that a lot of people doing V8 swaps are Camaro fans, so they’re on Camaro forums. The swap isn’t that hard, and given the size of the engine, is probably easier than the RB series (I’m pretty sure they’re kinda long…).
Yeah…good luck putting a ton of horsepower in a car and not having it break every other thing on the car. Its been said that fast cars are built from the back to the front, not the other way around.