96 Integra LS ABS Problem

All,
My girlfriend has a 96 Integra LS - the ABS light came on and it was making funky noises so we took it to Acura and to cut a long story short they say it will cost $1400 in parts and $380 in labour to fix it.
They sent me a diagram showing the parts we needed and I found them on acuraautomotiveparts.net for only $450 (part 1 and 2 on the image link)
So here are my questions:
1. Has anyone used acuraautomotiveparts.net before? Any gotchyas?
2. The two parts that need replacing are the "Motor Set, ABS" and "Accumulator Set" - has anyone replaced these themselves before? I'm reasonably mechanically inclined but am a little concerned about screwing up something as important as brakes :-)

The parts diagram is at the image url:
http://www.acuraautomotiveparts.net/acura/jsp/mws/catimgs/13ST70_B2410.gif

Thanks in advance for your help.
Regards,
Matt

it sounds to me like all you need is a master cylinder and http://www.acuraautomotiveparts.net is a trustworthy site.

when i put air cylinders on my 98 integra gs."you can see it at www.tsunamictendency.com"my abs light came.About 2 months ago i took them off and put on some coilovers.Now the only time the light comes on is when i hit a hard bump in the road.I don't under stand it at all...............Later...