5.0thunder246

Hello. I am new to this forum and sorry if these questions have been asked. First, what load can the stock transmission handle? Could it handle about 400hp and 350ft/lbs from the engine? Also, I am thinking about getting a new gauge cluster but from and original 5.0. Is there anyway to set the odometer so that my milage is correct? Finally, my stang isn't yet road worthy therefore I do not have insurance nor do I have it registered. I live in Jersey and was wondering if my insurance premium would be cheaper if I registered it as a collector car (3,000 miles or less a year) rather than just a regular vehicle? Just hoping someone can answer these questions. Thanks.