Got heads up from a Venezuela cherry owner that the E16 crank
fits the A14/A15 by using shortened E15et rods to 133mm.
Achieved by machining bottom rod cap ends then rebore rod mains.
Then use bushed 77.5/78mm isuzu holden gemini flat tops
for either 1660cc or 1682cc, rod stroke ratio is not the best
but engine is supposedly happy revving to 6500rpm for years.
However need to attain e16 crank, e15 rods & A15 sump.

Front snout is an issue unless using belt driven mazda
B6 head conversion which will suit it well