The MPC '72 Impala is high on my list too. (Miles, all I've got to trade is a built up '73 Caprice.) An MPC '67 Bonneville convertible. And AMT's '68 Lincoln. AMT's GMC Astro 95 with the turbine engine. AMT's Open Road Chevy Van. And any MPC early 70's Dodge or Ford Van, with the side windows and rear seats.
There are several more like a '65 Imperial convertible. But, the above are the big hitters for me. There is one odd kit I'd jump at if I could find one at a reasonable price. The MPC '73 Caprice with the option to build the RCMP version. Not a big fan of the '73 Caprice (and you'll note I have one). But, the RCMP police car would be very cool.
Scott