if you must have a throttle body spacer (i dont see a need, much less much benefit unless you have other mods like intake, and COMPLETE new exhaust as in quality performance header, new cat, larger pipes, performance muffler otherwise dont bother). If you have said mods, you may notice some difference. But if you have the cash for all those new parts .... what did you do that took the last $50 that you cant afford a proper aluminum spacer ?
At the very least use plastic.
Only wood on vehicles should be pickup truck bed strips, proper woodie siding, shifter handles, and dash boards. Or you own a morgan and you can have an ash frame.
No wood parts !!!!!!
good thing your thinking of pressure treated wood, because using regular wood would suck.
How about this. Make one of wood and if you can notice a difference promise youll buy a reall one. or make one of steel or aluminum, or plastic ?