TByrne is out of business unfortunately. A stock LQ9 tune would be very easy for someone to copy into your tune (should just require some tables to be copied over...MAF, VE, cylinder size, idle airflow, timing, etc). That's something that a decent mail order tuner should be able to do pretty easily. As stated above, just use your old accessories (including intake manifold and throttle body) so you don't need to screw with converting from cable TB to DBW.