Depends on which Avante you mean.
The original Avante was an overengineered piece of junk on the track. Alloy front uprights snapped as soon as they looked at anything solid, huge metal balljoints came with loads of play as standard. Fully adjustable multi link suspension looked pretty but was never any good on the track - it was so good every other car in the range had normal wishbone suspension.
Laydown shocks meant nowhere near enough suspension travel for off road, but handles reasonably well on road (not useful in a buggy though!) Odd shock sizes mean there aren't any alternative springs either. shock mounts need braces fitted to support them, but you have to remove the braces to get the body off if you trim it to the cut lines.
Tiny geared diffs weren't up to the job of handling decent power, centre ball diff meant all the power got transferred to whichever end had the least traction. Motor mount design means you have to take the top off the gearbox to adjust pinion mesh.
I was actually sponsored to run an Avante back in the 80s. Free car and all running costs taken care of.
It was so good that I gave it back within 2 months.
After all those faults it is still one of the prettiest race buggies there has ever been. The swooping, chassis hugging body looks great and really complments the 'high tech' chassis. It looks great and therefore very popular amongst collectors.
Alternatively if you are talking about the Avante MkII then it is a rebodied Dark Impact/Keen Hawk.