Hi All, I only recently found Mopar religion so please excuse me if this topic has been covered and I just can't find it but... After doing some online reading/research, it appears to me that the stock 318 in my "new" 1973 Duster underwent some changes to make it conform to emissions restrictions in the early 1970s. As in, a 1970 318 probably had more kick to it than my 1973 318. For example, the timing on my distributor is "supposed" to be top dead center (according to the emissions sticker under the hood!) but my gut tells me it would rather be advanced. What changes were made and can I, uh, unmake them? Thanks!