I have for sale a TSIO550E and an MT 4 blade prop with deice boots.   The TSIO550E has less than 200 hr TT and zero STOH (since top overhaul).  I had planned to take a brand new engine and have the top reworked, but I found this engine which is nearly new, and had it reworked instead.  The engine has deice brushes installed.  It is a 24v engine with 100amp alternator.  This engine is capable of producing more than 400HP, but my plan was to run it at lower HP and have it last much longer since the operating temps would be lower.
The extensive expensive work that was completed is:

Replace pistons with new 8.5:1 compression.(more efficient)
Ceramic coat and add teflon skirts to pistons.(lower temps)
Machine (Taper) cylinders (for better cooling)
All cylinders Cryogenic treatment (better cooling and longer lasting)
Port polish/blueprint heads with new valves (cooler, more power, more efficient)
Overhaul starter drive and install parts to prevent standard TCM drive problems (very expensive)
Extended test cell run to seat rings.
Also included is a brand new Air-conditioning compressor and rear accy mounting bracket($2500)
Engine is pickled complete and ready to go.  (yes, sniffle valve included)
$60,000

Brand new MT 4 blade prop with deice boots (this is the newer scimitar flat end blades).  Also includes new custom spinner that is ready to install.  $12000

Engine and prop  $70,000.00