We've got the 2000hp model (Type 12) on our 640 Pro Farm. Havent got it dialed in yet and with 40lbs of ice in the tank its all melted by the end, might need to try 60 next time. Its working great. Everybody told us we had to get the precision blah blah. I dont think im gonna spend $2,000-$3,000 on a piece of aluminum. Ill admit they are nice, but until We blow up at least 3 of these Frozen boost units I wont even consider a precision. $500 gets you the frozen boost unit. It aint as pretty s the precision but it works. If you are worried about it blowing up weld some reinforcement strps to hold the end takes to the center section better. Buy two extra 3/4" NPT weld bungs and add them to the opposite end of the intercooler for dual in dual out water. Then we used two Stainless Steel Aqua-Tiger Pumps (21gpm each) gravity fed from our ice box. As per suggestion we plumbed everything with 1" hose. You dont actually need the 1" hose, but the 3/4"NPT-1" Hose barb fitting has the right ID. Our stuff was from Banjo. Local sprayer supply shop had the pumps, hose and fittings. We turn one pump on at the line and the other one comes on with the water injection. You might have to play with it though to meet your specs. Were only running a 2.75x3 charger so its pretty easy to light with one pump running. Here is a link to the frozen boost unit [www.frozenboost.com] Here is a picture of ours after i got it all plumbed. 
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