I used a Mopar low profile 6 quart 1970/71 Hemi and 440 6 pak oil pan in my old Duster, I did slide the motor back one inch with elephant ears up front and I had to slot the stock V8 tranny mount to make it fit that way I did need to grind a tiny little bit, around a 1/4 inch, off of the K member rear lip on the passenger side front edge that was near the oil pan corner I also slid the rear end forward one inch with ladder bars and coil overs while stretching the rear wheel wells so I could put a bigger rim and tires on it for the increase power That car was almost 50 % weight on the front and back with me in it