Trenga Big bore kit..

Im upgrading to an Airsal 240 kit. From what i hear the better then the Vitos,and not that much more. Piston is better and its better for performance porting.
 
i though trenga whent outta business like 2-3 years ago???
i was going to buy a read spacer from them and they closed there site down the day i was gunna buy it... >=[
 
aren't all cylinders aluminum with cast iron sleeves???