Cast Iron Vortecs, assembled:
http://store.summitracing.com/partde...5&autoview=sku
http://www.sdpc2000.com/catalog/3129...-Assembled.htm
No aluminum Vortecs for that price as has been noted
There are definitely upgraded Vortecs available from GMPP, Summit and others that allow higher lift (stock Vortecs are lift-limited to .475 lift) and have been ported or otherwise improved.