I'll assume you have an original hood? ...the AMD Challenger ring is the nicest/closest original looking one out there on the market compared to the others, but fit is going to be a 50/50 shot, might want to also consider the one Resto Rick (if he still carries it?) has as well, but IIRC the mounting studs are exposed (drilled/tapped) thru the top surface and will need to be addressed, the SnoBar/Shakerhood.com ring is the same last I seen, the AMD studs are cast into the ring, I think whomever's ring you buy the fit will be compromised by either size opening gap/stud layout and or contours... personally your better off buying an AMD hood complete, or looking for an original ring if fitting it to an original hood, pick your poison?

Mike