First - I wasn't trying to insult you. Since you answered on different question, I assumed you either didn't read my question or didn't understand it (same did 3 three others, but they later correct their reply, maybe this due my terrible English). Nothing more.

I'll quote my original question:
"I'm looking for a way to get "real" outgoing headers, generated by LWP (I need them for logging/debugging purpose)."
"Real" - means headers, which LWP sent out, not which it return to me.

> If I understood what was being attempted here, was that you're looking to make the HTTP (0.9|1.0|1.1) HEAD request. (RFC2616 && RFC2616 HTTP-1.0)

Nope. Since you read my question, it's more than clear - my example script sending HTTP 1.1 requests.
That's visible both from code, where I forced it to use HTTP 1.1 (and actually that was overkill, since it use it by default for over decade):
PeerHTTPVersion => "1.1"

And from sniffer logs:

GET / HTTP/1.1
Host: example.com
[download]

I posted more detailed reply below, where you told - my question make no sense.