Anyone knows anything about PW SBM Head?

Just wondering if anyone knows anything about these PW SBM Head?

I'm guessing there just someone else's head rebranded for Canada.

Cad there $1,500 bare and $2,500 complete that's like $1,100-1,800 Usd, good thing is I can just pick them up locally.

Don't like they flowed it on a 4.25" bore, flow ain't looking too bad wish for a little more .300" would of been nice.

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