Well I'd have to figure that the average member can do some work but not all.If I throw out 10K then the hole gets bigger and more $$$$ suggestions are posted. For a bit of more clarity, I'd figure that you have the car with one of the mentioned motors. So, you can go the full build route or take what you have and improve on it. Remember 12.50/11.50 index. Run what ya brung, just tweaked to get to the index. This is why I spec'd the N/A.