there are dozens on the 703 swap, its a rather simple thing to do. melk has a good writeup on it that I tried to follow... The airbox cutout I got the idea from someone on the forum...rather simple just dremmel the front out. The restrictor removal is easy too, just take the top of the airbox off and you'll see this white thing in there, there are some tabs that release it, though it is pretty tight in there, i broke the tabs on mine lol but not a big deal since I'm not putting it back in
. If you do those, one by one you won't notice a difference. Together, you get a nice little response and power increase. Also clean the TB...its probably got all kinds of horrible carbon buildup on it.