the header isn't too bad actually. it might require some grinding around the header to clear some of the mounting brackets attached to the engine. you do however, need to relocate the O2 sensor location closer to the engine (i welded mine where the header and y-pipe connect. what happens is the O2 sensor is too far away from the engine and gives it a bad reading and you get really bad gas mileage (i got 11 mpg max)
here you go
