I have an old hewland,has the crown wheel and pinion,the pinion shaft is smooth about 1-3/8 dia has aprox 1/2" cut 1/16" deep about half way down,up near the front has 15 tooth spline takes up about 25%-30% of the shaft has no lay shaft,I believe it to be a mk4 but cant find any pics to prove this and if so how do the gears work (if there are any) what would the lay shaft look like,it had an older rear bearing cover and end piece with it the patina on both did not match the box and were stamped "mk 6" I have aprox 3 boxes of assorted parts if someone has pics or hewland diagram I maybe have the parts to complete, any help would be appreciated
thanks John