[quote=terry.sc;42741]Well if I was scrutineering I would ban it
The Lazer ZX was introduced in December 1989, which makes it VERY borderline, and is a very different beast to the ZX-R. To classify as a ZX it must have gear diffs, a split two piece top deck (so the chassis is really flexible without the centre plastic spine), the centre ball diff (no slipper!), alloy plate shock mounts and short front shocks and with 2 inch Optima Mid wheels. All the chassis plates were grp, not carbon. You could try saying it's a ZX with hop ups but as none of the hop ups (or the one piece top deck) were available until well into the 90s I would say none of them should be allowed.
I think you have made a little mistake. The centre diff was complex yes but was also a slipper, and a one way and much better than the hyperclutch when that came out in the late 90's. It could be set to 50/50 or 60/40 so the choice was there for many options. It has a slipper system and you could use with or without the balls in the spur. i know as I ran with this system for six years and my results speak for themselves. Also the ball diffs were available in 89 but the gear diffs were better indoors than the ball diffs, so not a problem using them or getting the parts as they are still available
Also the top deck in CF was available in 89 as well as the chassis as i had one. The two piece was ok as it kept the belt loose, which made the car more efficient and quicker.
The shock towers were also in a grp form and were also available from japan in CF as well as they were being used around 89/90.
But yes the wheels were small but that should not make a problem with 2.2 wheels as there are no tires to fit the zx wheels anymore, and lets be honest here not many peole are very good at cut and shuts.
I guess you guys say vintage to mean cars that are no longer competitive, whereas the zx was and still is a competitive car. Vintage was said to be in the 80's and this car was in the end of the 80's so is a valid car but im guessing the rules are being made up as we go along.