The Vickers Venom was a very small fighter built by Vickers which matched very early Hurricane performance. How might it have been made worthy of service?
Worth noting is that, compared to early Hurricanes, it benefitted from a variable pitch propellor so a better comparison is with the Hurricane MkI with a VP propellor rather than the original 2 blade fixed pitch propellor.
For information the Bristol Aquila engine weighs 352kg with a diameter of 46" and is normally aspirated and was using 73 octane fuel. For comparison the Bristol Perseus weighs 143kg more, is 9.5" wider, was supercharged and used 87 octane in normal use.
A supercharged Aquila on 100 octane would improve both overall power and power at height but at the cost of some weight gain.
There is also armour and self sealing tanks to be added. I understand the Venom was performance tested with guns and ammunition fitted but I am prepared to be corrected on this.
In naval use there would be the weight of any flotation kit, dinghy, arrestor hook and attachments. The Sea Gladiator may be some guide on this vis a vis the Gladiator.