MK3 AAM Engine for my 1990 Clipper??? Will it ? Won't It?

Hi,

I am need a replacement engine for my 1.8 8v 1990. Mine has been converted with a webber carb. The head gasket went revealing some corrosion on the engine block. I have been told a mk3 is easily adaptable into my mk1. Is this true. I have found a 1.8 AAM and have been told it will be suitable? HELP!!!

If so is it just the fly wheel I need to replace and a few blanking plates?

The Greek 71