Jeepster376 wins guru contest

[Solver]

Jeepster376 you win the guru contest!!!!!!!!!!!!!
this is update from previous guru needed post on carb problem
I pulled the carb back off and it has black exhaust on the bottom of the carb plates.
exhaust is getting back in!
I ran the numbers on my intake and this is what it lists
1969 -3927184350 - 4bbl- iron - Qjet A B F X Y/255,300,350HP, srv. rep.
It had corvette valve covers on it when I got it but seems maybe they used a corvette intake as well.
I know it's not the original engine in the truck
No idea on the block or heads but I am sure this is what is causing the problem!!!
Now how do I fix this?
I hate to go in and ask for a 1969 corvette carb!
Also hate to ruin this intake as it may be of value by pluging the exhaust ports in it under carb
Any ideas what carb i should ask for that has the exhaust port setup under the front of the carb by the mixture screws?
or do I just replace manifold with a more stock setup?