I was just thinking what about a REgal GS or GP GTP? Quite fast cars, the 3800 is fairly reliable though special care needs to be taken wiht the SC of course. Not the best autox but they'll beat most cars (before the recent HP wars anyway) of the line with the gobs of torque that 3800SC creates
They can be had with relatively low miles for a decent price. I know your looking at a manual but these cars are plenty fast wiht the ATX.