Oh... and another word on these LTs... I also had an issue with clearance on the front drive shaft, but since I went with duals, it was easily remedied. I cut the Y out of the Y-pipe, and cut the little brace that holds the pipes together, and inserted my X-pipe, this moved the primaries on the driver's side nearly 3/4 of an inch off of the front driveshaft.

Just an observation for you guys, I'll post up some pics of it at lunch.

 

So i just ordered the headers and yes you were right they are from dnamotoring i was happy with the price also as they went down since this thread first started

Subtotal:
US $237.99
Shipping & handling:
US $49.99
Total:
US $287.98

hoping to get them soon then next comes install!

 

im about to order mine too and was wondering if anyone is getting better, or worse mpg with these bolted on ? just lt's, cai, and my diablo sport tuner. 03 5.3 btw. only reason im going with this system is, my passenger cat bank is starting to go on me, and its cheaper to throw this full lt/ory on than it is to replace a cat. i know, i know. its probably somewhere in this thread, but its 44 pages. im already gettin dizzy from all the reading !

 

I seem to have noticed a slight increase in mileage, I havent had them on for a week even, but I did make a 200 mile road trip and it seemed to pickup about 20-30 miles on a half tank.

 

so now where the hell are these sneaky mo fo's !? cant find em on ebay or anywhere else. i checked dna motorsports and i see nothing.

 

thats bitchin ! i need a little extra mpg over power right now. wonder if i can pick up a little after a tune? im guessing il have to go 91 and no more 87 after a tune ?

 

It's actually kospeed just search them on eBay. I'm on my phone right now I can post the link to them later

 

they might be down right now, im only seeing the 500-600 dollar systems (same damn system just a-hole prices)

 

any recommendations on header to manifold bolts ?

 

re-use stock - just use a bunch of PB Blast to make sure they don't break when taking them off

and if you can't find them, call DNA Motoring. they're the ones who sell them. they'll usually give you the same low eBay price