Well there are knowledgeable people on corral, wondering why they say that though, never heard of a problem with them, they look just like the ones I had on the heads before I disassembled them. Got a link?
te only issue i know of is ppl say just to throw away the tfs vlave seals and get oem ones.But then again that was on corral forum.
I should have specified cobra gt40 springs.
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