Ok I have a 84 firebird and it has all the options... posi, 4 wheel disk, power everything.... execpt it still has the factory v-6..... but I am building a 4-bolt 355 right now thats gonna scream pretty good... but i hit a roadblock when it came to the oil pan... the 350 is out of a mid 80's chevy/gmc truck..... do i need a new oil pan for the firebird, or will the same one out of the truck fit?