freshalloy.com has the best faq since it is the largest site out of the 240 owners.
also heavy throttle aka srswap.com has an faq that is pretty good as far as what is needed for swap. the freshalloy faq is more general but you can find just about anything you want to know.
also, are you interested in getting a 240 or just wanting to know specs on them? if you are getting one, i would suggest when and if you get one to please learn to drive it first, and understand its stock limits, esp. suspension/braking/chassis. all the while reading up on sr20 swaps and the like. also give thought on goals and budget and time constraints and consider what you want before giving up on the ka24de (142ci stock motor), as it also carries good potential pending your above goals and budget.