may sound a stupid question but a mate of mine has about 10 205 blocks that he has striped out of cars that he is using for bangers, apart from the cranks and pistons being diffrent are they the same block ?? or is my train of thought totally off ??

 

I cannot see it being as simple as that. they do look very alike though.

 

RS500 block was a 205 block and is different.

 

i except there are diffrences i in all honnestly i hope there is or i've payed out when i did not mean too but what actual diffrences are there