It is possible to cut some corners, but it still won't be cheap at all.
Engine can hold 600ish for a while, provided it's adequately tuned and will not be overheated (read over-abused).

Ballpark parts prices:
- turbos 3k
- fueling 1.5k
- intercoolers 1.5k
- exhaust 1.5k
- various little bits and pieces - easily 1-2k on top.
- optionally MT conversion, can easily run 5k+ on its own.

Then you add repairs/maintenance pieces, labor, tune, etc - and it sums up nicely to 20+.