FYI, these are your choices of cast manifolds:

ATP Turbo:

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=tp&Product_Code=ATP-STC-001&Category_Code=BCS




Treadstone/Ancla:

http://www.treadstoneperformance.com/product.phtml?p=245&phot_key=417








Godspeed Project:

http://www.godspeedproject.com/store/index.php?main_page=product_info&cPath=3&products_id=365








SPA Turbo:

http://spaturbousa.com/home//index.php?page=shop.product_details&category_id=7&flypage=shop.flypage&product_id=14&option=com_virtuemart&Itemid=1

http://cgi.ebay.com/ebaymotors/SPA-Turbo-Scion-TC-XB-2-4L-T3-T3-T4-exhaust-manifold_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem4ce44b1240QQitemZ330247639616QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories





There are Treadstone and Godspeed clones on ebay for $100-$150. ATP and SPA appear to offset the turbo the furthest towards cyl #4 for more DP clearance, Godspeed is close and Treadstone places the turbo flange centered on the #3 exhaust port for the least DP clearance. Forget about running an internal WG with the Treadstone mani. IMO the Treadstone is the best design of the bunch.

 

Whats your opinion on the quality of the ebay versions? And what would you recommend for the xB2? Thinking about maybe piecing a kit together.

 

The ebay 'Treadstone' mani I received is a very solid casting. I haven't found any noteworthy imperfections. The flanges are machined very flat. I like the Treadstone design the best and my only complaint is that you can't run an internal WG with it because of DP clearance. Also, if you followed Homerhitta's build thread, you'll know that you have to be careful with dump tube placement to clear the passenger side radiator hose. The other manis place the turbo further towards the driver side which is worse for exhaust flow but better for DP clearance. Treadstone's WG placement is also the best by far.