Location dipstick manual transmission 1994 mustang cobra?

A 1994 Mustang Cobra with a manual transmission doesn't have a dipstick for the transmission fluid. Manual transmissions on those cars use a fill plug, and the fluid level is checked by removing that plug. The fill plug and the level check are typically the same plug. You'll need a workshop manual or a reliable online resource specific to that year and model to find the exact location of that fill/check plug. The location may also vary slightly depending on the transmission (e.g., T-5, T-45).