ok i have 91 crx b16a 1st gen swap. i want to put a header on it but all i can find are for the del sol and civic's. i know they will fit but i dont want to take it to a shop and get a second o2 bung put on. are ther any companys that mak a header for the 1st gen in the U.S? i found this company out of japan thats told me they have a mugen haeder for the 1st gen but its like 8 or 9 bills+shipping.