The M841MK2 [sold roughly 1997 to 2000] (RSB0071-058) would not be compatible with any screen we currently sell.
There are units you could connect on the used market. You would want to search the internet for one of the following:
M841MK2 display (RDP113)
1731MK3 display (RDP099)
7" NN1 display (RDP130 Mono or RDP131 color)
7" NN1 display (RDP143)
7" NNVx2 display (RDP148)
You could also consider selling your dome to someone and buying a newer system like the 1815.