That's a King KX-125, a nav-com with the CDI as a LCD digital readout in the center. Nice unit if there is no panel space for a VOR head, or as a 2nd radio w/VOR and no space for another head in the panel.
That's a really clean stock/vintage 150- yes, very well cared for, which shows in the original paint. Figure on doing the engine very soon, so budget an additional $12K-$15K for everything FWF. This is a great plane if you are an A&P as you can have the engine done and do all the labor yourself- even if you have a shop do the actual engine rebuild. Still, asking $15K is a bit on the high side for a run-out engine on a plane this old. Perhaps a later model with a mid-time engine for $3-5K more would be a better investment.
As far as converting this to a 150 HP, be prepared to spend more than what you could buy a C-172 or nice Cherokee 235 for.
Better to find a 150 already converted, preferably with big gas tanks- 22.5 usable doesn't spell "cross country" when it drinks more than the 5-6gph of a stock 0-200 cessna 150.
-Brian

Last edited by Brian_Anderson; 02/13/08 01:06 AM.