Yes. They're in the new catalog I believe. Yep. MUSTANG SUPER 8.8" IRS RING AND PINION SET PART NUMBER AXLE RING & PINION M-4209-88355A 8.8" 3.55 M-4209-88373A 8.8" 3.73 M-4209-88409A 8.8" 4.09