Chrysler guy for 30 years. Making a venture to FOMOCO. I came across a 4.6 Cobra motor while looking at some Mopar race parts. I am looking for a way to boost the 4.6 in my '09 Merc Marquis. Thought that the Cobra swap would be easy for a 1st stab at Blue Oval. The motor has "40K" and price seems right at $1,500.00. No computer and I have not had any success tracking down a Sniper or aftermarket alternate that will fit. Any help?