I would like to think of a shift point 65 to 6800 and maybe still pull into 7200 but 8K not likely. I don't know how far I can go and still be streetable to some degree I'm sure that's a matter of willingness to put up with some Bad Manners. I'm looking to something like track days on the closed road course. Autocross, Road Rally time-speed-distance type stuff. Autocross is really small for the Dodge Dart. At least the ones I've been to. The course is Honda size the cones are Honda size. It was a Stone Grocery getter when I got it .7 1/4 rear open differential. Very embarrassing at the autocross but I had a blast anyhow. Time progressed and their Came the 8 3/4 lsd a very healthy 727 new drive shaft add a leaf spring to the back urethane bushings . Stock sway bar in the front adapted. That grouping was a huge Improvement. all still with the 273 2 Barrel single-plane intake, huge performance. 273 has had nothing but basic maintenance oil changes points and plugs.