def sounds like a good deal those heads are some good money You could procharge that motor or bolt on a roots style and make nasty power Found this at
http://www.kocoa.com/supercharger_size_recommendation.htm Supercharger Size Recommendation Chart
Max Boost 300 cid 325 cid 350 cid 400 cid 425 cid 450 cid 475 cid 500 cid 5 lbs 6-71 6-71 6-71 6-71 6-71 6-71 6-71 6-71 10 lbs 6-71 6-71 6-71 6-71 6-71 6-71 6-71 8-71 15 lbs 6-71 6-71 6-71 6-71 6-71 8-71 8-71 8-71 20 lbs 6-71 6-71 6-71 8-71 8-71 8-71 10-71 10-71 25 lbs 6-71 10-71 8-71 8-71 10-71 10-71 10-71 10-71 30 lbs 8-71 8-71 10-71 10-71 10-71 10-71 14-71 14-71 35 lbs 10-71 10-71 10-71 10-71 14-71 14-71 14-71 14-71 40 lbs 10-71 10-71 14-71 14-71 14-71 14-71 14-71 14-71 45 lbs 14-71 14-71 14-71 14-71 14-71 14-71 14-71 14-71 Max Boost 525 cid 550 cid 575 cid 600 cid 625 cid 650 cid 675 cid 700 cid 5 lbs 6-71 6-71 8-71 8-71 8-71 8-71 8-71 8-71 10 lbs 8-71 8-71 8-71 8-71 10-71 10-71 10-71 10-71 15 lbs 10-71 10-71 10-71 10-71 10-71 14-71 14-71 14-71 20 lbs 10-71 10-71 10-71 10-71 14-71 14-71 14-71 14-71 25 lbs 10-71 14-71 14-71 14-71 14-71 14-71 14-71 14-71 30 lbs 14-71 14-71 14-71 14-71 14-71 14-71 14-71 14-71 35 lbs 14-71 14-71 14-71 14-71 14-71 14-71 14-71 14-71 40 lbs 14-71 14-71 16-71 16-71 16-71 16-71 16-71 16-71 45 lbs 14-71 16-71 16-71 16-71 16-71 16-71 16-71 16-71