Converting my '87 to a 20v cost me $4000. Engine and tranny were $1150. Labor was $850. Other performance parts made up the rest. My engine was damaged when it was shipped, so I had to pay to replace the parts. The shipping company and the distributor failed to respond to my inquiry, so I just purchased the parts to get it going. I have the 20v header if interested in putting it on your 16v. $70