No. The pumps are completely different. Aside from the output not lineing up with your skimmer, the pump will be way to much flow for the Alpha and it won't work right. You need to get a new 1500 block for it to work properly. You can order that pump direct from the factory:
This is the block you need with the correct base.
http://royalexclusiv.net/Spare-Parts...-250::142.html
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