Hera are a couple pictures of my 71 R/T. I have no idea if it's an original cap but clocks the same as yours. It a September 70 SPD

IMG_20190121_161202998.jpgIMG_20190121_161222105.jpg
Last edited by steve70; 01/22/19 09:28 AM.
1970 Challenger T/A 4 speed