Hirobo Invader SR 1/10 buggy

This is a rare Invader buggy by Hirobo. It comes from 1989. The chassis is very similar ro Kyosho Optima. The body is amazing. It seems a space ship. I think it has been the first buggy with underside lexan body to protect the main chassis.

My Invader is a SR version so without Mabuchi RX motor. The version with this motor included has called Si.

Now the question is: Left it in the box or i have to build it?

In the last pics you can se the Invader with my other NIB Hirobo's car 1/12 Ashura.