A buddy of mine gave me a really cool shift knob that comes stock on the is300. Its a round knob with chrome on top and grey on the lower half, and it matches perfectly. I tried to just screw it on and thread it myself but it is several sizes smaller than our shift bolt. I tried to drill it out but the largest bit i have is too small and i need to go buy a bigger drill bit. What i wondering is if anyone knows what size bit i would need. I would like to keep the hole slightly smaller than our bolt so i can screw it on with a little glue to make it stay.

 

get yourself a pair of calipers and measure it. That would probably be the easiest way... and that way you know you're exact.

 

what do you mean by calipers? do you mean an adjustible wrench, or is there some tool that will measure the bolt?

 

caliper is a special tool used to measure the size, in this case radius of an object with the best of precision... An example of one is...:



But there are other options... you can find one of those drill bit gauges... Which looks like this:



Yea i'm bored and i went all out on this response... The third method would be to use a ruler.. lol

 

the ruler or the 2nd option would definately be obtainable.

BTW, thanks for the in depth response