Fly wheel problems!!

Hello everyone!Just got my 408 together and having some issues finding the right flywheel.I have a dart block,C-4 PA tranny with SFI bellhousing.I have a 164 tooth SFI flywheel I got from PA and its just really close to the bellhousing.So I got a zero balance B&M flywheel from jegs and it wont even line up with converter holes,its like its to shallow or something.So if any body is running my set-up and could let me know what flex-plate they got that would be awesome.I have been building for over six months and this is the only thing keeping my from firing it up!!!

Just told PA to send me a flywheel with the convertor and thats what they sent!I also thought stock AOD mustangs were 164 so I thought it would work.Guess thats what I get for thoughtin huh!Do you have my set-up?And if so what brand and size did you get?