Ahhh the memories.... My twin brother had one of these back in 91. I have got some photos of it somewhere that need scanning.
It's a great looking bike in all it's fluorescent pink glory. Sadly his was quickly stolen but was fortunately replaced under insurance with a 1992 model in white.
if the stem's been changed (which it obviously has) then so must the bars have been also. A-Stars had a kooky 28.6mm bar/stem interface and Flexstems are 25.4.
Make sure you add some wheel skewers before ripping any monos.