http://www.lightningforceperformance.com/catalog/productDetails.php?productID=1140 The LFP unit is on sale for $299. It's gotten very good reviews on the modularford website, and is WAY cheaper than the gordsford unit. I don't think its even half price. It's a direct fit and on sale.. can't beat that for someone not looking to spend more on a H/E than an exhaust.
No offence, but the two are not the same. If you are bargan hunting, then go for it... if you are serious about performance, get the Gordsford. No other heat exchanger recovers more hp on those hot humid days.