Crush bent or mandrel bent has negligible horsepower diff on a naturally aspirated car. As long as you keep the bends to a mild degree you'll get pretty much the same results for cheaper unless you are squeezing every bit of HP you can get then spend some money.
'12 Focus Red Candy SE Sport 5 spd
'99 Toyota 4Runner Sport
'11 Subaru WRX STI Hatch