I am building a tube chassis, sbc 350, 700R4, narrowed 9' Ford rear 1969 VW Squareback station wagon. I will also be running A/C. Question I have is this. I have a new aluminum radiator (fits 78-80 Camaro) with an electric fan/shroud that puts out 1800 CFM The car will probably weigh in at about 2,500 pounds. My question is. Can I just ran this fan only, without a water pump fan? Mainly due to room restrictions.