i know in the states things are cheaper but $1k for a turbo kit sounds way to cheap. i would be looking at the turbo alone costing more than that. did it include internal upgrades as well ?
sounds like a cheap eastern knock off with a standard ebay cooler some pipe work at that price.
if your wanting to turbo it you will need to lower the compression as well so remember and budget for this. id say look towards around $4k to do the job yourself then you need to get it mapped
Adding a turbo is a major engineering task and without a kit with full instructions and all the parts you need there is a big risk of blowing up the engine. Expect to spend 50 hours upwards on a project of this type. This is not the sort of modification unless you are mechanically competent.