Nice pic dart4forte. Alright, I'll put the D64 intake on the 273, and see what it can do. Are the 273 heads closed-chambered ? Do they offer any performance features / options ? Twin Carter 500 cfm carbs ? Progressive linkage, with the rear primary feeding at idle,or run the carbs equally ? Does the 273 have adjustable rockers / solid lifters ? I'm thinking I'll swap the cam & lifters with a fresh set. Any recommendations ? I'll not be pulling the engine out and doing machining. I just want to make it a good driver for now, with some performance & street intimidation features (gear drive ?) to intimidate the Chevy (sorry for the bad language here) boys out on the streets. The axle is a 7-1/4" ? Not sure what the original gearing is with the 273 & 4-speed, or how much it can withstand for future performance. 8-3/4" instead ? Thanks for your help Mopar brothers. :D