I completed my hellcat swap in my 1970 GTX this past spring and couldnt be happier with the car. For mine, I used TTI headers and their mounts with the stock K member. I used the 45 degree adapter for the oil filter. I had to use it or go remote for fitment. If your using the stock gauges, you can adapt the factory sensors with fittings to the block. The engine itself has a separate oil pressure sensor for the ecu that it reads. In my case I have a Dakota Digital Dash, and they have a module that uses the factory readings off the ECU to power the gauges. If you havent already, PLEASE , remove your K member , make a dolly for it, and assemble everything for fitment on it before you install the engine, and install everything from the bottom. You will be sorry if you dont fit everything first. Hope this helps.