Friend of mine did a BBC in his '92 coupe ex 4cyl car. He made it into a true street radial car and did a good job with it-won a few races. Then it got turned into a drag radial car, beat on, then into a bracket car. Ran some 6.40's on slicks with a 468. Later he finished his 540 and went some 6-teens. We actually met at another track by accident (we didn't know each other was going to the races that weekend) and we ended up running the semi-final together. I won the race-bracket race-but not by much. What upset him was that he spent close to 20 grand on a BBC and his coupe was slower than my maverick with it's lowly home-built 414". But he was 2940 race weight, mine is 2500 so a 400 some odd pound weight difference, was about right. I was a 5.84 and he was a 6.19.
They can be built to scream (BBC) but they ain't cheap. Motorplates are the way to mount them, IMO. The plates bolt to the front of the block a LOT better than the Ford motor plates do. Headers are an issue but with the right research, they can be had. The rest is cake. More or less a BBF swap with different headers.
Funny..people hate it when swapping a GM engine into a Ford car, but when we see a Chrysler engine in a Ford, or even a Ford engine in a GM car, I guess it's not quite as bad for whatever reason. Local racer runs a bracket '83 Mustang with a 460" BBF and a good friend of ours runs a '56 Ford Victoria with a 500" Mopar wedge. And it is wicked!