For Tial 770's + Fueling + Rods + FMIC ect. You would probably come in at around $8-10K. Want to go 2.8 / 3L stroker & built top end, toss in another couple G's. For going big turbo most people usually calculate 10-15K depending on who's doing the labor, and state of current motor (maintenance items).
The cars can be had cheap nowadays....