i have a 4300 motorcraft carb on my cleveland now and it does a excellent job..i had to do some tuning on it at first, i had to drill the jets a lil bigger size but i kinda figured that goin in, but once i got that done its been runnin like a champ...oh and it howls just like and ole quad...there is also a 4350 spreadbore...heres a link to show what the 4300 looks like...good luck...
http://www.carburetor.ca/carbs/HTML/...spreadbore.jpg
heres the spreadbore 4350
http://www.drbob.tqhosting.com/tech/..._compared.html