i cant decide how to build it.. 427 with 200 shot or iron block 408 sts turbo.. and maybe 100 shot to spool up. i can prob do both but the bottem end i need help with. whats the cheapest way to get a shortblock to withstand 800 HP. i know LUNITA can do this how about Eagle? only got 16k
or yall give me some ideas.

 

Unless you do most of the labor, $16K will not get you either one. With that budget, I would go wth the 427 motor and just a 125hp shot N2O wet kit.