Vertical Doors Inc. is a true bolt on kit.
This post is what led me to them. //www.fiero.nl/forum/Forum1/HTML/096630.html
You basically pull the fenders and the outer door skins off, shim and secure the doors into place, remove stock hinges and replace with vertical hinges.
Then after a few adjustments they open and close very well.
You do have to trim the inside part of the fender for the hinges to clear and also cut the belt moulding back but they work well and mine have no wind noise whatsoever.
They are a little difficult to raise when sitting in the car but no big deal.
And it`s nice to be able to get in and out if you want to without raising the doors.
If you need any pictures of them installed let me know.
[This message has been edited by TXGOOD (edited 08-18-2016).]