Dodge Challenger 73 need Ring & Pinion Set

I have a 1973 Dodge Challenger 318 engine with automatic

Question: I have a 1973 Dodge Challenger with a 8.75 diff it is a 489 differential and I'm looking for the standard ring and pinion 2.74-1 do you have anything in stock, maybe even 2.9-1?

Answer: Nothing out there that we know of, a 3.55 ratio is the closest we can get.