I probably could not find a 454 TBI locally .....
anyhow just need 80lbs injectors. (Post Link???? please)
Increasing the fuel pressure is relatively easy by making the regulator adjustable.
Even a type CMF enlarging the bore is relatively easy
with small grinder.
I try to post some pictures but the attachment tool just says too large, even try to re-size still to large.
My photobucket account is blocked by organization
Here is a good link: