A local man named Dave Moore engineered a 5.7 swap into a Duster and his brother-in-law, Tom Shrum, did the fabricating. It was a lot of work obviously because there were no factory guidelines to follow. The mostly stock 5.7 with OD Auto runs 12s and is driven to the track and raced on street tires. I have known Dave and Tom for probably 35 years. Dave used to drive a 67 Barracuda with a 440 and Tom built a Plymouth Arrow with a 440. Dave has been in his chair for as long as I have known him and I have never been able to beat him on the track.