Another D/Dart 275/273 question???

I have a 68 dart 270 with the original 273 . I read about the 66
D/stock class dart with the 273, was wantiing to make
A "tribute" engine. Found the specs for the old camcraft cam that they used
Type the specs, in the desktop dyno. 355 lbs ft of torque at 5500 rpm
And 400 ponies at 6500 rpms. That is with 9.9 compression ratio 051 heads
1.88 intake and 160 exhaust. With stock flow numbed. Tunnelram intake 800cfm
I have played around with other
Heads cams but so far this is a good combo and it fit in the budget. All parts but the
Cam and lifter are on my self..