Went back and found it here: http://www.x-h2o.com/index.php?threads/et-sj-billet-bigbores.120675/page-6
PHP intake Manifold make 4hp over the older R&D one. some more info for you!
If it's on a Dasa motor you should be able to get very good info directly from Dasa. I bought Dasa 48's for my 1200 and it came perfectly jetted and with the mixture screws set nearly perfect, just had to adjust them a touch for my elevation.
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