Beretta to corsica

hello i was wondering if the body panels off of a Beretta will fit onto a corsica. one of my friends :loser: totaly demolished the engine in his 91 Beretta GTR.. and i was wondering if anyone has ever tryed to put beretta panels onto a corsica.. i have alot of spare time on my hands and we were thinking about giving it a try... my corsica is a 89 2.8L FI.. and his is a Beretta GTR, 91 2.8L Turbo.. from the Haynes manuals that i have cosica and beretta follow the same with engine and drivetrain.. also i have been testing my corsica cause we are goin to be racing it this summer on the 1/4mile... and i have found out that my car is governed at 210KPH :naughty: ... is there something that i can do to take this off such as a mod chip or something????... or do i have to do the whole ECM thing.. cause the GTR is locked out at 160KPH :eek7: which i kinda find odd... :confused: