will an s10 cap fit my 99 Tacoma limited

the s10 cap is 60 wide by 74 long

 

Most likely it won't sit right.

 

That Taco will immediately quit running if you put a chebby part on it, even if it is just a camper.


J/K I have no idea if it'll fit

 

Looks like its too wide.
https://raybuck.com/pickup-truck-bed-size-dimensions/

I have a ranger cap on mine, but its one of the big ARE aluminum ones so they're a little more forgiving, and even then it took some modification to make me happy with the fit. Get one specifically for a tacoma if you can find one. Also beware that regular cab caps are different than access/double cab caps due to the slope of the back of the cab.

 

Ranger had a really wide bed rail so it's cap has a lot of leeway. If all you want is a cop for occasional use, these work.