early A body engine swap
With the 273 style Brackets 2710 (Napa 606-1653)biscuits from a diesel '90 W250 are close to the correct thickness and have locking tabs. The hole in the mount for the alignment pin has to be moved a bit.....
2469 aren't thick enough and let the engine sit too low.
With the Shumacher conversion mount the 2469 may be thick enough.