i have a standard 1200 manual trans tunnel. was wondering if a rotary gearbox would fit in the tunnel behind a 13b. are the 12a and 13b belhousings the same meaning the same boxes can be used. looking at a 13b it looks like the gearbox mounts higher than most boxes ive seen. will this mean that ill have to try and mount the engine as low as possible maybe scallop the crossmember or would i be better off using a bigger trans tunnel or some gentle persuasion with mr sledgy.

happy new year everybody