1200s...
I have a D&D 1200 with nitros and it works very well. But it sits because my Twisted 1000 turbo and the 1200 turbo i built are way more fun to ride. I saw a 1000 turbo kit for sale the other day for $2500.00. and, pistons for the 1200s have went way up. not tryin to discourage you on the 1200 but a pump gas 1000 (6-7psi) at 7000 feet will make about 50hp more. Good luck on your build.