LOL if you were going for a serious drag-race to decide who got to kick whose arse then you could cane the Corsa pretty easily. But if were just talking about every day traffic lights grand prix and getting from A to B then the Corsa will be quicker. Although Im sure it is some kind of abomination against nature to put a 1.8 in a Corsa.
Anyway if you want to do a one off race to settle it, no rules on mods then:
1. Let down the front tyres to about 20-25psi and keep the rear nice and hard. If you can borrow a pair of 18s or something then put them on the back and keep little wheels on the front.
2. Strip all the interior out except the drivers seat and dashboard, or get as near to that ideal as possible
3. Only have 1/8 of a tank of petrol. Just enough to do the run and get back to the petrol station.
4. About a hundred quid will get you a basic full throttle gearchange/launch control unit which will probably take 1/4-1/2 second off a 0-60 run. Wiring can be a bit of a hassle if youre not used to electrics.
4. You could go even further like taking the drivebelt off the alternator and removing your mirrors/aerial/wipers and taping up the bonnet and door shuts if you were going for a higher speed challenge like 0-100 or top speed.
Good luck!