First off, DSM injectors are LOUD. They tick like crazy, so if that bothers you, dont get them.

Second, you wont need the clips. They pop right into OBD1 clips...you might have to melt off a small tab a la the 9005 conversion, but I dont remember what I did, it was real late If youre OBD2, you need the clips.

Also, instead of a resistor box, you can use some 10watt 10ohm inline resistors from Radio Shack. Theyre $1.49 a pair, so $3 as opposed to $30 is a good deal.

Like everyone says, your optimum injector size all depends on your setup. You can also use old Supra 440cc injectors or RX7 550's, but you have to make sure youre getting the primaries, as the secondary injectors are 850cc's I believe.