[LoBelly]

Proof is a tricky word Plums (but not as tricky as trying to work out what you intend to achieve with your post)

According to the first definition I struck at Dictionary.Com proof is 'evidence sufficient to establish a thing as true, or to produce belief in its truth.'

I don't know why it would be that your claim of experience should be considered to be proof and in any way a valid challenge to Ian's assertion.

I'm not sure what anyone is to make of your concession that Ian may be 'slightly true' - how many shades of true is there.

Here some opinion for you ...

I think it is particularly cheap to say 'I don't want to start something' and then go demand proof when you wont hold yourself to the same standard

In any case he's just letting people know about some headers - if you're convinced your larger primaries are better fine - give us the data.

Personally I'll be very surprised if there is a large enough sample of LS1 cobras to perform any meaningful assessment on the relative merits of header sizes in all applications.

Of course, I'm often wrong - so surprise me

thanks

LoBelly