The bell is one piece with the trans and the bolt pattern is completely different, no it won't work. No idea who told you the bolt patterns where the same but they are completely wrong.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.