I cant decide which one of these PLM headers I want to buy for my B18C swapped Civic. Can anyone help me? My first target for the build is 200 horsepower and then after that 230 but Ill be lukcy to do 180 on this first version

https://www.speedscience.co.nz/colle...eader-b-series

https://www.speedscience.co.nz/colle...er-b-series-v2

https://www.speedscience.co.nz/colle...29175300685923

Thanks

 

Ground clearance sucks on PLM manifolds, Look into 1320 Toda replica !

https://www.ebay.com/itm/1320-Perfor...Cclp%3A2334524

 

Yeah, I had to cut about 1/2" or so out of the primaries on my H22 PLM to bring the downpipe up closer to the oil pan, and a header on a street car really shouldn't have slip joints; they naturally leak, there's no way around it but to weld them up. Find something one-piece. That 1320 header doesn't look bad.