from their US distributors website:

the castings in all these pics look pretty rough. Also appears as though the linkage post holes go right through to the port judging by them having a barbed fitting in there in those photos. A bit dodgey.
There's some Redline ones on ebay for $70 more if you're willing to spend a little extra and keep some of our money in our own economy...
EBay Redline twin oval port manifold