15x7 on BBody 83/4 - Anyone run this?

That's what I was afraid of. I guess relocating the perch is a better option than having to cut the rearend. It sounds like a crap shoot. Guys offering for the Scamp and wants to throw in the B Body rear since he knows I'm needing to replace my 7 1/4 in my Dart. But if the wheels don't fit, I've already got a C body 8 3/4 I can use with the 489 case. ANother post for another forum I guess. Thanks for the input and if anyone else runs this combo, please reply. Thanks guys.