I installed a 96 360 magnum in a 71 dart about 3 yrs. ago, Car was just like yours, same color too, they look like twins lol, anyways, It had a factory 8.3/4, All i did with the 360 was install some RHS heads (factory's were cracked) & had the factory cam re-ground from Bullet 477/477, 218/218 @50 112 LSA, Installed an Air-Gap intake & a 650dp, 4.10 gears & a 2800 stall, Car ran 12.5s @ 105 on every pass, 1.80 60ft. times on 275/60/15 MT DRs, It was so efficient all it liked was 30* total timing, i tried 32* & it slowed, It ran a best of 8.06 in the 1/8 at 85, I install a 125 plate system on it, On its only decent pass it ran 7.4s @95 & i let out just a bit, the rest were a joke, blew the tires every pass. I only shifted at 5000 with that engine, thats how mild it was, That night i ran with the bottle was a crappy night, DA was up, car ran 8.2s @ 83 on motor.
So what i'm saying is this, "JUICE IT" & hang on :burnout: