single turbo = more efficient than twins

with 8 grand, GN's can get into the 10's no problem, but the way this car sits, i wanna keep it original, so that one day, when i'm like 89 and dying, i can sell it on barrett jackson for like $120,000

 

BUT...455 with twin turbos =1000hp and 1300 TQ

 

thats a T/A alum isnt it(u win on the money part there)? hard to do that with org iron as core shifting + the thin castings didnt always works out to well.
but if you going extremes , theres a guy gettin 1000+hp out of that same pair or turbos in a wideblock 350.

those dual ex-turbos do look nice on there tho.