[924CarreraGTP]

My ideas are probably unwanted here as they often are on conversion posts, but I don't care for the quality of anything mass produced by GM.
Porsche won the GTE-Pro, and GTE-Am classes at LeMans beating Corvette Racing in 2013, and in 2014 will probably take top honors in the P1 category. I have a feeling it's coming real soon. Seeing as how Porsche is statistically the most winning endurance racing car manufacturer in history. Over 20,000 wins, and 16 overall wins at LeMans. The 919 just took the fastest lap at Paul Ricard this week.
You can quote weight differences, power output, or whatever else you want to quote about the LS series engines, but they don't impress some of us. They will never be a Porsche engine. With money and development a Porsche can outperform a Corvette any day. 2013 LeMans is proof of that. Maybe not a tired old 944, or 968, but with development you could have a very fast car with a 944 Turbo, S2, or 968. Auto Haus had a 185mph 951 in the 1990's.
Next, something nobody ever mentions in these V8 superiority swap arguments is that the slant four of the 924/944/968 engines was designed to counter the weight of the driver on the right side of the car. Porsche engineers everything for a purpose. When you slap a V8 in a 944 you are not only changing the weight, but taking away dynamic handling balance of the car.
Therefore, a 951Turbo, S2, or 968 engine is in my book the only acceptable swap for a 944.
You can argue with me until you are blue in the face, but none of you are Porsche engineers. Also, nobody at Chevrolet is a Porsche engineer either. 2013 LeMans also showed that.
That is my .2 cents worth.
You are doing a Porsche 944 a disservice by going for the cheapest power plant swap that makes the most horsepower. The question is how long will it make that hp? Will it run 24 hour races as the stock 944 engines did in the 1980's? It's doubtful.
My partner and I spend every spare dime that we make on our Porsches, and I make them my own, but if I couldn't afford to modify my cars, I would drive them as is. I'll lose to new Corvettes with pride because in 1986 my 944 would tear a Corvette a new butthole on the race track, and well prepared 944 race cars still win constantly in SCCA racing.