Vito high compression Head Gasket???

about 4 months idk if there is any power gains i cant really tell i add a bunch of other mods when i bought them but i havent blown a gasket yet so theres a plus
 
no miracle science ..jsut a head gasket thats .020 thinner than stock
 
i know this is an old post, but what , if any, are the downsides of this? I believe im having blowby from my head gasket and was looking at this kit. any help on this??
 
Anyone know what kind of compression gain there is from a otherwise completely stock motor? I am replacing the top end gaskets and wondering if it is worth ordering this kit or just going to Rocky Mountain ATV and getting stockers from there, as it is just down the road. Thanks!
 
Anybody have any input on this gasket? I can get the stock for the same price and is easier to get. Will it make any difference? Thanks for any input