I'm looking into buying an aftermarket cam and was wondering which would be the best for my truck. I have all the cheap mods done to it like the injector spacers, tbi spacer, fuel pressure regulator and such. Which of these two cams will give the best performance for the money. http://www.compperformancegroupstores.com/store/merchant.mvc?Screen=PROD&Store_Code=CC&Product_Code=K12-249-4 This one was recommended by a few people on here a while back. http://store.summitracing.com/partdetail.asp?part=EDL%2D2102&autoview=sku And this one was recommended by brian at www.tbichips.com My last final question is, how much noticable difference will I see with a set of cam and lifters? Will I really beable to tell after install?