I picked this up on ebay about 3 weeks ago. Paid $28.00 including shipping. It's built for a hyundai Sonata. I just guessed that it would fit, and it did, like a charm. Easy to install too. So far the unit works great. sounds great, gives the truck a much deeper throttle sound and there is a definate acceleration gain, specially at lower RPM. I've run one take through it and there was a slight gain in MPG, but that could be from many things.