we put a 383 in a 69 /6 valiant & used those swap mts that tell you to drill a hole in the kmember bracket (just the one on the dr side iirc/been 10 yrs) & it fit perfect. Been racking my brain to remember what company the swap mts were & no luck yet but I'm sure it is one of the companies that have already been mentioned in this thread. Good luck with it