can i somehow use my old brackets and old accesories with the ls1? do i have to buy custom universal brakets? how will the alternator work with the ls1 wiring harness. will the old 10-si alternator put out enough power? can i buy pullies to put on the accesories so it all fits a serp belt? i am trying tpo stay away from expensice ls1 a/c comp, alternator, etc...any help appreciated.