Externally they are not different. It is pretty much like having a 2bl 400 and a ram air III 400 block. Look the same on the outside but internally they are different. Plus there is the codes on the blocks. A YW code 400 carries a far higher value then say a YT. PX is kinda the base turbo 400. While PQ is the super heavy duty version. As for the dipstick tub, I emailed you back with a offer yesterday, you could take the tranny for scrap and sell the dipstick to me and [censored] near be at the 250 price. Not saying you should scrap a good turbo 400 just saying you could do that and almost hit your 250 mark.
