ok. so, we,ve got my bike, a cbr 1000f( 1987) and my bud's bike , a cbr600 (1991). mine's registered , his is ? ( it's legit, but his buddy who sold him the bike is in iraq , and he's a procrastinatoin type, so he'll never get the title, anyway)my motors blown, so has anyone ever stuffed a 600 into a street fightin 1000 frame? any tips would be greatly appreciated