Steve, I think you guys should get more exhaust systems other than Mac. Maybe you guys can look into Borla, Magnaflow, Flowmaster, Spintech, etc. This way the customer has more choices, just a suggestion.
OK the Idea of being competetive is finding the best products but at the same time not have to much money tied up in inventory. Inventory sitting on the shelves cost money. So having the right mix is critical but offering competetive prices is equally important.
So they do continue to add more products but as they add more they either rely on drop shipping or tie more money on inventory. And as we have seen with people like MAC who take forever to ship anything Drop shipping has its draw backs.
Remeber they are not Summitt (YET) so as their success continues they will grow and offer even more new and exciting products