i have a 90 n/a hardtop. i want to swap to a turbo engine (7mgte, 1jz, 2jz)but im unsure what one to use and have lots of questions. i want a really fast supra with rediculous amounts of power but on a limited buget. ive found all three engine on ebay n craigslist for pretty cheap.

1-which engine is cheap to build but very reliable?
2-will i need to change motor mounts, trans mount, drive shaft?
3-which is easiest to swap? im also wondering about all of the under hood connections? (vacume line, electrical, gas lines, various hoses)
4-any special tools needed, i have the basics but anything else?