I have an e15et block in the shed and 2 holes don't exist on the block to match the bellhousing.

I might post a pic if I get a chance.

Motor mounts will have to be completely fabricated.

The left side should be no problems because you could use the mounts on the block that are normally for the AC compressor.

BUT on the right side, you would have to make something up using the smaller studs that attach the oil pump or similar.

...I'll get some pics.

Another thing is Dizzy. It will stick through your firewall so something should be done about that.

Also, the rear thermostat housing is next to the dizzy so would be very close to the firewall, but should clear if you're carefull.