Im looking at buying a new converter for my truck...just from reading it seems like both ATS and Suncoast build nice converters..although ive heard local diesel shop guys says that ATS stuff is weak and only marginally better then stock. any experiences? I use my truck for towing, racing, and transportation. might get into a little sled pulling later to... and also want to get the best converter for harnessing the new spartan 310 and high horsepower. which one is best?