with that small of a difference you will not see much effect, I was told by the Vortech techs that if the width is to much the motor can run hotter and you run the risk of them falling off, but I have seen mp10's used with in the range you are talking about. But with that said, I do not think two mp10's will be your best bet. For one mp10's are fairly load when fully cranked, I think they are the loadest of them all when fully cranked I dont know why but that is what I have experienced. I think you will have to have them fully cranked to get decent flow. I think geting 1 mp40 would be better than 2 mp10s for you, or you could look at used and try and find a good deal on some there.
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