Not another 318 VS 360 Thread.

At this point, I'd do a stockish rebuild on the 360, even using cast pistons if you have to overbore. Find a good shop that does meticulous work and do a nice valve job on the existing 1.88 heads. As RRR said, a mild Whiplash or possibly a milder Lunati voodoo will give you some sound. Just keep in mind that the cam choice becomes more critical with stock compression, a stock torque converter, and stock gears.

I can see a 360 in that configuration, with a good dual plane, 600ish carb, and dual exhaust, putting out a legit "installed" 250/260hp. In a 71' Dart, that would be a fun driver imo?