depends If you want to make a custom kit It would run you(cutting corners) $750 and thats without tunning. Now If you get all of your parts from a junk yard you can probably bring it down to $600 or around there and thats with all used parts. If you want to get a custom computer or just a safc it would be cheaper. Your looking at under $1500. Go to www.homemadeturbo.com for some Ideas of junkyard kits.