I'm going to start a new build soon to go in my 2007 Chevy Silverado 1500. I'm set on the LQ9 block and have most of the other components picked but just need a little help on some of the other parts. Here's a list of my components so far, if y'all have any recommendations for parts already picked, fell free to say, open to all help:
LQ9
CNC Ported L92 Heads
Holley Hi-Ram Intake
BBK Power-Plus 102mm TB
Kooks LT Headers
Random Technology Cats
True Duals with X-Pipe

I need some help on choosing my valvetrain, stall converter and new gears

 

All I could find listed, on the Holley site, was 92mm and 105MM. Either way, get the lighter LS3 valves put in the heads. You valve train will thank you for it.