360 HP estimate???

All depends on how far you wanna go ET wise, but here are some specs and on track times from my street/strip '71 340, 3550+lbs Cuda.

Stock 2.02 heads no porting, 10:1
.484/284 hyd purple cam
MSD6A..NGK 6's
factory rockers
stock 3.55's + 8x26" slicks
3500 verter
ally dual plane, 750DP
small tube hdrs
all stock suspension
just long shocks +snubber
13.29@101 = 303fwhp.
max rpm 5900
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Stock T/A heads with W2 rockers (worse than stock heads)
.590" sft purple cam
NGK 7's
adj. rockers
4.30's, 10x28's
H-Strip Dom int.+2" open spacer
850DP 4781 with milled down choke tower
1.3/4" race hdrs
4200 verter
same suspension
12.39@108 = 367fwhp
Limited to max rpm of only 6200
cos of valve train .

+N20 11.01@122
early to mid 80's

Just some real info on specs /weight from the track to add to the overall mix of parts
and what they can do.