remarks:
dont think that just cause the vin says v-6 that you cant get in trouble (im not sayin you were implyin that formula but you didnt say so i will). that is technically insurance fraud, if you get in an accident or they require visual inspection then they can find out. also, it is even less cost-effective to go from a 3.4 to a 3.8 than it is to put a v-8 in. if there is a swap possibility i have probably looked into it. i even looked into putting a dodge motor in my chevy, bottom line is that unless you really just want to do the swap. it costs less to buy a v-8 car. also, there are few options on building the 3.8, and there almost none for the 3.4. so, you have some decisions to make...