i saw the double trigger kit out on ebay, and then there's the stock adapter plate, and a few companies carry an sp-1 specific car stock, but no other mods for it yet. I've heard rumors that there's going to be a blackheart, virture, and tadao boards coming soon too. I just got one of these bad boys today, and my plan is to get the stock adapter, with a 98 stock, a few q-loader attachments so i can mount mine under the barrel, a hammerhead once i get the appropriate funding, and possibly a bipod. Just giving you some ideas.
Smart Parts SP-1, Stock Adapter, AIC Q-Loader w/ CMS kit, Tipp 98 Car Stock, 14" J&J Ceramic
August '07 SOTM: