Bill, Wish I could help you, but I bought a turnkey. I think most VS/JPS owners either go turn-key or a true roller. Maybe you could call Kirk (VS) and John (JPS) and see if they can put you in contact with a recent Kit buyer, That's where you will find some answers. Hopefully someone is lurking on this forum and will help with good info.
As far as quality of the JPS & VS product? I have a VS that I am extremely happy with in quality, and VS support. You will find many on this forum that agree with my opinion. Same goes with John at JPS. His customers are equally satisfied and the cars are well built. And IM carries a Platinum level of reputation and price, ha-ha... easy George, I'm just being giddy.
If I lived in SoCal, I'd be tempted to check out JPS and get a face to face with John Steele.... the temptation comes from staring at John Leaders photos (see registry) of his 2 month old black and tan JPS. I think John (Leader) was able to oversee every aspect of his build, and knew exactly what he wanted, and probably set the bar for standards and expectations a notch higher. Living close enough, he ended up with a car just as he visualized it... John Steele did a knock out job on that car.
I live in Okra-homa City, and so my build experience and choice of builders was based on the builders reputation and accessibility. At the time (18 months ago) JPS wasn't taking as high of a profile as they do now. Their Web Presence wasn't as big, and they were a little hard to contact sometimes... I think that certainly isn't the case now, and they enjoy & have earned a solid reputation with the majority of members of this forum. I think now, that JPS has always built good cars, but their communications were needing a little jump start. I would think ordering long distance would be a good thing with them now. My individual experience with Kirk Duncan at VS has been a total pleasure... from ordering, adjustments during the build, meeting my timeline, delivery, quality of build, service/parts on two minor glitches in the past 15 months, to just a nice rapport with a very likeable, honest, and good guy.. Kirk. I talked to Henry several times at IM... I wanted a new Speedster or 59 Vert D from IM so bad I went to bed with his price sheets on the night stand. I could have afforded it, but in the end I went VS after assessing my needs/expectations/and willingness to pay a bit more and wait 6=8 months for the bang. Some day I may go for an IM Speedster still. we will see. You do know that IM offers a "coach" roller in varying stages?
Bottom line on quality.... ? The great thing is that you can't go wrong with these 3 builders.... cool, eh?
Jim (Dub U Tub under the member files)