why are ya putting a 383?  that's a Mopar if i'm not wrong? (383  is what i have in the dart,,it opens up very well)  

 why not a  chevy  396??    love them motors!
 
or even a 454?? ha but that is crazy!  that's a bit too much speed.,.would need roll bars and frame steel for that in the  1/4 mile!   lol 
have a good one!