So I see why they don't have a direct application for a 4 to 1 header for the 90-93 integra. cause when the motor is in the car, you can't get the header in cause the front crossmember is all in your shit...anyway, so you would have to drop in the motor with this 4-1 header bolted, or unbolt your front crossmember, then slide that piece through and bolt it on...the question is, would the front crossmember and the header be hitting each other, cause i seen a 4-1 header on a EF chassis, and they had to notch away at the crossmember,...??