XE268 to Voodoo 03 cam change?

I'm pretty happy with the combo I have, just seemed the cam was a touch light.
I have a good convertor (JW), new Speed Demon carb with annualer booster, air gap, decent igntion, K & N filter, true duals etc..
Part of the fun for this car is shaving a few seconds off the original 16.2 et whilst remaining entirely tractable for road use. I live in the UK so cutting a few corners is necessary with cost of shipping/taxes etc
I should also add that the trans is a new rebuild with shift kit, higher rpm governor and bolt in sprag, so that will shift fine.