hey guys. ive got a question about turbos. i just bought a 2001 f-350 with an afe stage 1 intake, php chip, 4 inch straight pipe to 5 inch miter cut stacks. i am experiencing some surge when i hammer on it a little bit. i was looking at buying the ATS ported housing because its an almost guranteed fix. a friend of mine told me that the van turbo is a great drop in replacement that will provide better performance, cure surge and lower egts....plus you can find one for a couple hundred bucks more than just the housing. is this true? thanks for the help!