I emailed Greg who had the dash that i posted the link to in my first post. I got the retro sunpro gauges from summit yesterday and they do fit into the factory gauge cluster with slight modification to the back of the cluster. I popped the chrome ring off and removed the gauge bezel and lens. had to drill the mounting holes on the cluster out a little but then the gauge fit nicely. only down side is the needle is a slight bit shorter than the factory gauges. So it is possible if anyone else wanted to try this modification. i will post some pictures when i get it finished up. should look real nice and factory when done. for the tach i ended up getting the factory tach conversion kit from classicparts.com with the stove bolt discount it wasn't much more money than the retro sun tach. If anyone on stovebolt doesn't know about their 10% discount just type in "stovebolt" in the promo code spot.