The A1000 really isn't tall enough to do much with.
I have enough trouble myself getting things inside my A2000 case, as the PSU sites only just over an inch away from the CPU, and having fitted a Mega Chip, I have had to raise my VXL-30 and it almost touches the PSU/drive mounts.
But ask on eBay, i've seen dead 2000's go for a £5 + P&P (didn't manage to get rid of mine thou, so it had to go to the bin)