I original had a 4.8 and did everything bolt on you can think of and it just doesnt have it. So I but a blower on it that was the best way to get the power you are lookin for and its street legal in cali. Also you dont need to mod out your exahaust or you rearend or your intake or a programmer. It will fly but at cost of around 5,000.00 to 6,000.00 for the best Maganson. Then start saving around 150.00 a moth in a savings account (lets call it the new tranny in 12 month account). Good luck.