I have the Barstow as one of my favorite cars. I like everything about it, except the customization. It lacks a few suspension and wide body components, such as "sport springs" but that is not the main thing. My main request, is to have more and better 6 cylinders. We have the ETK I series, and the old american ones. The problem is that the latter is incapable, the only upgrade is worthless at that level, race oil pan and engine mounts. My idea is, that there's a "Sport long block" which makes it somewhat stronger and lighter, then there's the "Performance long block" which gives it forged internals and allows it to rev higher, and produce more torque. The next and secondary engine suggestion I have, is something not that new. There are I6, V6 engines, and there is a flat 4 now in the Sunburst, but what about a Flat 6? I'm not going into too much detail about this one, it's kinda straight foward