reason y is cause its in a 180sx,i got after market bonnet which i don't wanna chop into as its ADR compliant and crap all room to keep it as a crossover design and they do look better facing forward... thanks for all the feed back.i thort they would lean out. i have read the same article on the 26 manifold,main reason for power diff and torque is due to the runner length,id like to get one that bolts onto and uses bottom half of standard manifold to avoid that.trouble is finding one,id pay good money for good stuff, just going through the options, ill check out links given so hope they will help. thank you all.