Sherman BARV question

[Buster Reed]

Hi All,

Have spent the afternoon flicking threw books and found a picture of the Sherman barv and it got me thinking.
now were these built solely for the British sectors of the D-day landing, as 60 were built specially for the D-day landing so providing they all made it there would this not have been a vast amount of them all in a limited space. If so how comes there are next to no images of them, and what happened to them after the landings were over?
Next...as far as im aware there are only 5 surviving....there's the one in the D-day museum,reme museum,a museum in India also cadmans and lastly the one pulled of the ranges in bovington......are there any more that exsit on ranges or in any other collections in the world?
Lastly.....having never seen the interior of one and providing one of you have, are they literally just m4a2 Sherman's without turrets, that being the case what does the commander stand on as he is rather high up.

hope these arnt stupid questions.....

all the best Kyle....."buster"

This has been posted on another forum.....But I know not everyone uses the forum