Welcome to the Team Tayler!
Yes indeedee that would indeed be a challenge. The Impala as noted is not only a front wheel drive car, but because the motor is sitting side saddle it is limited to a V6. Now if you wanted to rip every thing out of the car, set it on top of an S-10 rear wheel drive frame and then convert the v6 S-10 over to a V8 (that has been done before numerous times and there are even books with step by step instructions to accomplish that feat) you could do it but it would be a whole lot easier not to mention cheaper to go find a used replacement V6 motor.
I salute your ambition, but I would try another project for your 350.