Looking for a double roller for a slant 6

If you're putting a '68 or later slant-6 in front of a '67 or earlier automatic transmission, you will need to install the 1/8" annular spacer ring between the (small early) torque converter nose and the (large late) crankshaft rear flange counterbore, or you will quickly and repeatedly eat up transmission front pump bushings and seals.