Well I ended up drilling it today... Got it out
Later I am going to drill the whole to 1/2" then tap it and put a 1/2" to 3/8" fitting in or a 1/2" to 1/4"-18 NPT Bushing. I might just do the direct 1/2" to 3/8" fitting since I already have it, went to home depot and got it. I have to order a 1/2" TAP though... But other then that it's looking pretty good so far. I just have to remember to take the tran pan off and make sure that 1/2" isn't to big that there is no wall's for threading.