i have personally dealt with banks it took over a month to have them ship a six gun to me and will never deal with them again
i have also dealt with hypermax great customer service, good products no complaints had their 90hp chip for a year


have dealt with ats no problems with them a little pricey though on some things i had a 94 idi factory turbo and i bought the upgrade kit and 3" downpipe

chip wise i'd recommend dp tuner or some other custom chip
exhaust look on ebay
air intake either 6637 or afe pro guard stage 2