gameshark 2 version 4 speed code

im looking for gameshark 2 version 4 codes to make b-spec mode faster then 3x the speed, i looked around the site and at gameshark.com but i havent found codes that plain out say make b-spec faster or anything like that, ive tyred accleraction codes thinking it was for that but it wasnt, so does anyone have gameshark 2 version 4 codes to make b-spec mode faster then 3x?? thx

and also im kinda confused with one other thing, is it possible to make hybrids in gran turismo 4? and if so how do i get the garage file onto my maxdrive?
 
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