The GM ZZ4 crate motor w/hot cam and 1.6 rockers will put you there or the fast burn crate motor. Pretty darn reasonable and dependable and a warranty.
The ZZ4 can handle a freakin beating ..I mean beating !!!! .
For the price, new parts....Alum heads, 4 bolt main, forged crank, PM rods(good to 500 HP), high silicon pistons, roller valvetrain, oil pan, intake, etc.
No machine shop fees tough to beat 355 hp 405 ft lbs for under $ 4k.