If you shop around for the best price on parts and is a hands on person you can build one for well under $2,000. That is about what i spent on my built 3.1. i had the shop do the machining to the block, head, and crank fully balanced. i did all the assembly to the block and porting/assembly to the head and did not skimp on the parts. now im under going a megasquirt conversion and turbo hks surge tank blowing through 45mm oer itb's this is where it gets costly. good luck!