Ehab,

$850 will get you a new generation three ECU, the engine upgrade. fuel solenoid, propane solenoid, and an A123 three cell battery.

The on board propane tank is optional and not included in the $850.

Return shipping is not included, but the factory will ship it USPS and add the cost to your invoice.

(An upgraded engine past it's two year factory warranty will not receive any additional warranty, but the ECU, starter motor, and solenoids are covered under a new two year warranty.) This policy has been clarified to me. Any engine sent in for the $65 inspection and given an "IN SPECIFICATION" diagnosis will receive a six month warranty. The six month warranty also covers engines that are sent in for repairs and upgrades.
Thanks,

John