Hello everyone! I'm new here, I found this site looking for answers on my transmission for my 1985 F-150, you may be asking, why are you asking questions about your truck on a mustang forum? Well, toploader transmissions aren't very common in our trucks and based on my research they are a more common occurrence in these mustangs. My question is if anyone here has experience drilling and tapping a drain hole since I have the one that was equipped without a drain plug. I tried the bottom bolt of the tail shaft, no luck. I've tried sucking the oil out of the filler hole and from the top and I just can't seem to get the tube to reach the bottom of the transmission.