Have to hide it? Why? Part of this hobby, at least to me, is if the brand of the car that you are building does not have available what you need to be satisfied, LOOK ELSEWHERE. Nothing wrong with it. There is some people around here that would much rather see you burning up parts using an all Mopar drivetrain, or make some serious compromises, than doing what you need to do for YOUR car. In my case, a 727 with a GV will not work, I will need to run a loose convertor and with the torgue of a 572" EFI Hemi and the od effect of the GV it will equal a lot of convertor slip. Couple that with all of the hills I have around here and it will equal a burnt up trans. A 518? At least for me, while it might work, I like the adjustability of the gm4l80e's electronics. And my trans guy, at least this is what he told me, feels that the 518 is an inferior unit. You do not agree, do not argue with me, argue with him. He has only been doing this for 25 or years. His units have covered hundreds of thousands of desert race miles. For what it is worth, I have learned that there are certain things that should not be discussed on this forum, and one of them is the swapping of another brands components into a car to make it more driveable. My trans guy used to push the GV when that is all there was available for an od unit. But after several failed units and with the onset of the parts to swap newer electronic transmissions into cars he has since stopped pushing the GV unit. IT IS YOUR CAR, PUT WHATEVER TRANS YOU WANT IN IT........And if someone has an issue with it and there comments bother you, just put them on your ignore list. And as far as the expense of a trans swap, in the grand scheme of things of the building of a car, what is another couple of thousand dollars?