Well, with 30k Euro in the block, crank, head alone, you aren't going to get there with the $4000 euros left in your 50kAUD budget. Shit, your not going to even have an engine. Still need rods, pistons, All bolts/fittings valves and valve train gear, dry sump system, manifolds, turbo, gates. Thats before we get to clutch, GB, shafts, diffs.
Budget well and truly busted.