Maxed out SLP LT's??
 

is this true? I hear they are pretty much flowed out by 400 HP. I plan on adding a FM14 cam, roller rockers, new valve springs, and an LS6 intake.

Will my SLP LT's be "Flowed out"?

If so, I'll be doing them AGAIN! QTP's 4 me!

yes you will pick up horsepower by switching the headers, esp. after the cam/ls6 intake

Did you read the mod guide by JRP? There's a wealth of info there especially
comparing LT's. If your SLP's are getting rusty or banged up then I'd consider
getting new ones. You could get better bang for the $bucks than another set
of headers if not needing replaced. :)