Damn what are you smoking and where can I get some? Just Kidding. Definately everything from the bell housing to the LT203 is different, including the crossmember. You'll have to find a disco clutch pedal box, an R380 with the right length mainshaft, piping and ditch the oil cooler stuff. Might even have to change the flywheel, I'm someone can shed light on that.
A guy told me one time "don't let yourself get attached to anything you are not willing to walk out on in 30 seconds flat if you feel the heat from around the corner"