How to build a High-rev 4AG-E engine at home ?

I really mean home build ... with all the tools and part ....

in order to re-make the engine ,what i need to know ?

I work in a Auto workshop before.. and sturdy some courses about automobile engineering .....

sorry about my english ....thank you

how about you just get a 20v. Ive heard of some toyota 4age atlantic, high rev about 250??