give me a shout sometime. I have access to some props that might help. The SHO'S i have delt with were beast. Got one sittin in my shop on a 625 blazer pushin 85 with my worked prop which is 2-3 mph faster than the 625's with a merc. Could be driver could be a strong motor dont know alot about the blazers. havent had a lot of dealing with the Eyra's but I do know there are two walls speed wise you run into with it. You have gotten past the first one sounds like. I have a 27 t-1 worked up to a 28 and Jason has a 29 worked down they both run good. i think with some increased height and the 27t-1 of mine you could do a little more damage.

Doug