^ T10 only describes a wedge based bulb with nominal 10mm base width, while the bulb #s further differentiate that size into wattage or light output (especially for LED bulbs, what the manufacturer suggests that they are meant to replace, "IF" you can trust the manufacturer on that).
#194 has a T10 sized bulb base, as does #161, EXCEPT that some 161 seem to come in a T8 size base too... so don't take my word for it on the 161 indicator bulbs since their holders look smaller in pictures so those might be a T8. When dealing with LED retrofits, there are multiple considerations but one here is whether it is too tall to fit in the available space, and I can't help you with that, but apparently what 410Fortune has linked, has already been tried and known to fit.
Personally, I'd just get long life incan bulbs. I don't want mine to have any colder a color temp like (most) LED do, nor do I run them at full brightness so a brighter bulb doesn't interest me, and if (which they have on my '98) the originals lasted over 25 years, that's more than long enough for the replacements.
However there's a huge variability in how long the aftermarket (especially generic brands of) LED bulbs last. A perfect laboratory test with a cool running LED, can see them last 50K hours or more, but in real world, hotter running uses, I usually find that they don't last as long as incan bulbs do, including a couple models of T10 LED bulbs that I've been running in landscape lights, where they might get 1/4th the lifespan of the incan bulbs they replaced. At any given moment if I look at those landscape lights at night, one or more of them are flickering and need replaced. Fortunately with them on every night for several hours, they save enough on power to pay for themselves, but it's a heck of a lot easier to replace those than digging into a dash to do it.