I had a Prosystems 1000 with the metering blocks and squirters setup like a 1050, and it was awesome. And against a 1050 4500 Thumper carb, it was .08 slower in ET and almost 2mph slower overall. I would highly recommend the newer 1050 model he has and a Thumper tune or I can give you mine. Do not do annular 1050 4150.