The apex silvia one will be about 1000 dollars . It looks real real nice and I sort of wanna have be different. Everybody with the Greddy kit is running the greddy one. The apex one looks better but is way way more expensive. Its 475 plus 50 bucks for the end tanks and I still have to get the piping done and I want to get it coated. But the guy I spoke to at XS said that I will lost my bumper reinforcment. But Ill lose it anyways with the Greddy one so I dont care. So what do yall think Greddy or the Apex one. Oh BTW this is in about two months or less. Thanks.