You already have a DD with no known problems except needs more HP.correct?
I would write down exactly what you want Ls/ turbo A/c ps or Ls/Vtec and start obtaining parts. This way you can get the best parts for your money. Why settle for a ebay turbo setup when you can piece together a presicion turbo setup. Since you already have a DD you can take your time and you will learn alot. Just my $.02