Good question, I just noticed them recently myself. I've been running the TTI 1 5/8 step headers and they have done great but I think the stroker motor would breath a little better with these new ones...


Wade Metzinger 918-809-0987
71 Cuda 9.28@145 -1s, Pglide
68 Cuda 10.64@124 1.45 60's 318->390 eddys
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