i also have your same problem, i think its pretty much a personal choice, im just going to try and find a factory cluster with a tack because i dont like having a huge gauge for my gas and it seems like a tach in the bottom corner would be too out of the way to be useful. i have also been thinking about getting the big after market tachs and putting that in place of the fuel gauge but that just seems like it might look a little funny if i didnt also change out all the other gauges. i really want to find one of the old factory clusters with rpm and fuel in the same big pod, but i think they only came in diesels. but yeah i say go factory, check parts yards, ebay, and classifieds.