[fordracing65]

Exactly what I said, I've seen probably over 1000 of the 3000 SPF cobras and nobody seems to upgrade to a better mufflers, After talking with Lance and Dennis Olthoff and being at both shops over 5 times they also are under the impression that there pipes flow fine. I understand that there mufflers are restrictive, but if it was so important to SPF guys they would all upgrade, Hope that helps out your misunderstanding, I know this is hard for the mentally challenged like yourself to comprehend. Now if you look at a Kirkham for example, most guys upgrade to their stainless setup over the mild steel, if you don't believe me call Lance yourself and ask him if an SPF muffler upgrade is needed, he will tell you the same thing, NO, I like the aluminized set-up Rare Iron sells, but if it was so popular they would all have his upgrade. I don't understande where you say cost and complexity are the problem, the mufflers cost around $200 a piece and any welder can put these on, seems like a cheap price for an awesome power upgrade. Sounds kinda schizophrenic to me.