400's are they any good?

Anyone have any ideas for one going into a 68 B-Barge Coronet 2 door? The car has a tired mild built 68 318 (cam, headers, intake, 4bbl) with 2.76 gears. I have been told it could be turd even with headers, intake, Firecore ignition system and convertor? I am hoping I can get some 3.23s in the rear for free but, we'll see. I already have a supposedly running '74 400 and 727 I bought for somewhat cheap . Been looking for a decent late model 440 from a car or truck locally and can't seem to find one cheap enough so it's looking like this engine will have to suffice.

I been tinkering my 400 more and more lately and am pleased with it. I have an older Hughes cam in it (470 lift, 214 dur and 108 LSA), Edelbrock Performer 383, rejetted 600 Holley (works good but a 750 would be better), exhaust manifolds with 2.5 inch dual exhaust, double roller timing set, high volume oil pump and 452 heads. The 1 inch spacer under the carb really surprised me.

It it a respectable performer in my ' 65 Newport coupe which is heavy to say the least. It' gets decent mpg(for what it is) and rolls strong up the interstate with the 2.76 gears. Provides plenty of passing power when needed and has a nice little lope to it. Fully streetable power...

This thing in an A body would be crazy fun and I bet a B body would run real good as well. I like the 400 and see the potential within...

Please give me all your worthless 400's, I will give them a home here!