thanks for all the replies. I need some clarification, if 1 7/8 is the right choice for this engine, what exactly do I lose by going 1/8" too big? Is it a loss of tq, hp or both? Is the loss down low, high or across the entire rpm range? If it is a loss, how much are we talking?

Also, a few things I forgot to mention, I will be adding nitrous to this engine. Not alot, probably 200 shot.