Drilling a hole in a shifter reverse lever?

hi, first off, the lever is hardened steel. probably can't drill it. only way is to disassemble shifter heat lever up, let cool natural, this will soften it , now can drill hole, after drilling, reheat and quench it in water, this will make it hard again. we've done that to shift levers on transmission. just food for thought. I'd leave it as is.