Hello there, I currently have a 1968 Dodge Dart and I was thinking, instead of throwing a HEMI in there, I could probably buy a Gen 1 or 2 Viper Engine and Trans for half price of the engine itself and throw it in there. The car was an auto on the steering column so I will probably have to make a slot to fit the transmission boot and shifter. I do understand that the engine is 34.5 inches long so I'm guessing I am going to have to move the firewall back 2-4 inches (because a slant-six is around 30-31 inches long and almost hits the radiator. Speaking of radiators, I am probably going to need a custom one or an aftermarket one. Would a Be Cool Dual Fan Radiator work? Also, my dash is an issue because it has a large crack and I don't know how I'm suppose to get the gauges going to right speeds. Is there anywhere I can go to buy a custom dash and gauges that would fit? Any advice would help. Thank you