Welcome to the forum,
This forum is full of great looking trucks, and packed with great mod ideas and there are loads of knowledgeable and experienced people here.
AND - We all like pix! Thanks for sharing yours....with the sneak preview of the Viper!
A cap on an SRT10.....
....I have seen a lot of caps, and honestly, I can't think of any that would do any justice to that truck. The only thing I can suggest is do a Google search for truck caps and try to find one that you like....but I have to agree with those that figure this will ruin the look. The truck cap industry just doesn't' have anything I'm aware of that would be considered Sport Performance Stylish.
Good luck with your search....and keep us posted. If there is something out there that actually works well, and looks right, it would be nice to know about it.
Enjoy the Z!