Theres usually some tubing in the K&S rack at the hobby shop. Use either 1/4 inch or 5/16 inch for your exhaust stinger. I also found some tubing in the K&S rack that is really close to the inner/outer diameter of the macs headers. you can extend your inlet pipe into the can similar to an ultrathrust muffler.

The medium sized mousse cans (herbal essences, rave mousse, etc) 6-10 fl oz work great for the 40 sized engines. Remeber that the weight listed on the can only means how much product is in the can, not the can size. One manufacturer will say 6 oz, and the next will say 8.5, and its the same can. Rave is the cheapest of the mousse cans, at a whoppin $1.69 a can. Another great place to find them is at auto parts store. Outlaw fuel injector cleaner (which you can use as an excuse to buy a couple, one for your car, and one for the wifes, cause youre thinking about her engine ) is a great can to use. Kills two birds with one stone, and your car will like it too.

Pinhead,
Tom told me what a blast he had at your field Saturday. Sorry I wasnt able to go along with him, I was down in FL. But I'm going to do my darndest to get out there next go around. What did ya think of his force 1 video plane with the mousse can on it? That thing rips across the sky.

Steve