Best bet for the money would be a Greddy or Edelbrock kit. CARB legal and oh-so-easy to install.
If you wanna go DIY you have a lot of options.
Manifolds;
HX/VX manifold w/adapter plate. Cheap, easy to fit, and really durable. Adapters can be made or bought to fit all frames of turbos.
CC-fab/homemade tubular log .Not crazy cheap, but an awsome price. External/internal WG option.
Greddy/Revhard/etc cast manifold. Awsome flow, really durable, but can be a bit pricey.
Crazy tubular manifolds - Full Race, Peak Boost, CC-fab ramhorn, Lovefab. High prices, but mad flow. Only considered if making above 300whp with a BIG turbo.
Turbos; Many people with D's use either DSM 14B or smaller T25 frame turbos. Lots of useable boost and small size make it easy to fit. A T3/super 60 hybrid would be a the next choice along with other T28 variants. That's about as big as you should go for a good DD ride with decent power.
Get a good intercooler and some decent piping - although you can do the piping yourself. If you're on the cheap DSM sidemount intercoolers and piping can be made to work. Regualr FMIC's can be had anywhere, but shop around.
For fuel you'll likely either need a VFAC hack to run DSM 450cc injectors (needed to provide enough fuel) or you could tune your car with Uberdata or Crome on an OBD2-OBD1 convereted P28.
I'd check out D-series.org or Homemadeturbo for more details.
Good luck!