My opinion on what to do with the car...we almost built a clone of that car also, for a customer who already had a 54 2 door sedan, wouldn't have been a true clone, just an "inspired copy". If you are going to build it to impress people at the big car shows, make a statement, or recreate a piece of history.....do it as exactly as you possible can, like we did with the Kopper Kart. We went through a lot of pains (AND EXPENSE!) to replicate the Corvette 6 and the side draft carbs, the "unborn calfskin" interior panels, and the special perforated metal used behind the grill, tailights, and side trim (they don't mass produce those patterns now) But our purpose was to bring it back as close as the original as humanly possible, mistakes, bad styling, and not so great treatmant of the glass, included. On the other hand, if you just have an attraction for the car, and want to copy it's style, but still USE it, DRIVE it, ENJOY taking it places, build it close as you can to the exterior, interior, but make it easier to drive, if you like, or if parts to duplicate the engine are too hard to find. I wouldn't be very critical if you used an older V-8, even if it was newer than Sloan's era car. Esp. if dressed up in nice period fashion. If it's hot where you are (is it hot in Texas?) and you plan on driving it distances, I'd put in AC, probably upgrade or replace the suspension, disc brakes, maybe steering. Just don't open the hood at car shows, esp. where the more rigid minded tradition guys would be! Customs look better with it all closed up anyway! Good luck with your build, whichever way you go with it! I know how hard it it building a clone, if you have any questions, either PM me, or I'll give you my phone #, if you'd rather talk.