FST

It sounds like you need a plan here man. What are you using this car for? Are you doing anything but daily driving? If you're going to use this with autoX or on a track then in it may be very much in your best interest to look into purchasing or even trading for a manual Integra (it will help you exponentially on the track to have 5 gears with more control). If you plan to use this as a street only car, an auto is fine....but before you turbo take it into a shop(preferably an import shop) and have them change the transmission fluid if you haven't done that lately. There's a magnet at the bottom of the casing, and if it has any metal stuck to it....bail out. It means that your transmission has too much wear to handle boost. Another option would be to look into having the transmission either cryo-treated or shot peened. That's extremely expensive however.

As for the the boosting, with 70k on an LS this can easily be done. Have it compression tested and corrected so that the compression is normal. Decide how much power you want and select your turbo set up from there.

At the end of the day your transmission is holding you back both N/A and turbo. Turbo is going to be cheaper for each hp you gain as compared to N/A, but it won't be as reliable on an auto Tranny and old-er motor (my motor has 74k and i plan to turbo so have no fear, just take the necessary steps).

Hope this helps.

-DaBat