No, far too much work and not worth it money wise as well. Look around, there are a bunch of threads on this subject that will list all the reasons not to do this. It is far more cost effective to sell the V6 car and buy a V8 car.
WHat you can do is spend the money on your current V6. A really good turbo kit would come in under $4K installed and you'd have more power than a V8 for more than 1/2 the cost of converting your car to a V8.
88 LX 5.0 Notch - MAF conversion/B303/Heavily worked GT40's/1.72's/HD FRP lifters/Edlebrock Performer/BBK 70MM TB+BBK EGR spacer/BBK CAI/19lbers/70MM Ford MAF/BBK Ceramic 1 5/8 LT's+BBK catted X+blowmasters/3.55's