Very inspirational images. One question though, and a general one that applies to many Viper builds on this board: why did you give the Viper's exhausts grills? I have seen no other images of the TOS-Viper than just a thick walled hollow tube without any interior detail.
Well, I know that in the original model there are no grids, but I take this license for purely aesthetic reasons. When the lights of the thrusters are lit it's not very important that there are grilles or not, but when they are off ... I just don't like to see that empty tube.