The hard block may or may not cause any cooling issues from the responses I received on here. some good and some not so good. I took another look in the block yesterday and the fill is 2 1/2" from the deck. Once up and running and tuned I will start venturing out around town then a trip to my fathers about 80 miles and if theres no issues with the cooling at that point it can be driven any where. I figure since I have the fan and pump, why not try them before spending anymore than I have too. If it wont cool, then go for the electric fans and maybe water pump. seems like the smartest thing to do. If ya have the parts already why not try them first.