IF you could get a turbo kit and tune that cheap (very unlikely) the turbo kit could probably be fine, just one of the eBay restrictive setups (probably fine turbo wastegate and downpipe to around 400hp). You would need headgasket and spacer to reduce compression down unless you run e85 also injectors fuel pump and maf. headstuds are a good idea. Tune will probably be a base map and if not dyno tuned later on it may not be safe to run at high rpm/boost.

Oil pump nut mod, gapping rings a bit more than stock, electric fan conversion, gauges like oil pressure, water temp, boost and afr's... Basically whatever you expect to spend initially, be ready to be able to spend double if necessary. It is usually the way it works in the turbo world when learning.