Hey Streamfreak,
Each boat had a slightly different setup for core. I am not familiar with the Vaserette specifically, but the VKings core did not come up as high on the sides as the Vector's. I would assume you are looking at a complete core job. I wouldn't get into an older stream without doing all the core replace work first. Sounds like a great project boat though. Good luck with it and post some pictures if you can.
Bill

Maybe its me or my kid but Im on the down side of a core job on my vector and just laying core now and my son emails me a ad for a Vaserette with no motor. It looks interesting and fairly clean but missing the original interior. Its a 88 and Ill assume itll need a core and floor. I have not looked at it yet but want to know before I go see it. I read its the same bottom as the Vking just different top thus giving me the front seat area for the kids which is my attraction. So here is my question? Is the pad area and core the same as the older Hydrostreams or did the core change any with better design and materials? Are they all the same in crappy building materials with the Pipcorn era streams? If I buy am I assuming the same job as my Vector?