Here:  

but is there a pattern or guide for the codpiece?

I was able to buy the DLT-19x files from surfinbird132 on Cults before he mysteriously took them all down a few days ago. Posting my build progress here.  So far I've got all the pieces printed out and did some 120, 220, and 320g sanding. Next step will be to glue all the pieces together with the dowel and pipe then bondo.     

Well, this turned out like bantha poodoo. Any tips on getting straight lines? Also noticed the bottom line is heckin crooked 🙃  

Looking forward to watching your journey to approval unfold. Let us know if you have any questions along the way. We’re here to help you get across the finish line!