Might I suggest that the thrust for the Aerospike would be 190 with a ISP of 380 in vacuum/378 in Atmo to make it competitive with the LV-30? And I also didn't see that post about the plugin Edit: Whoops was in my face the hole time xP yeah I see why but I was thinking of a thruster that didn't have gears like VASMIR but was like it in shape, size, thrust, ISP etc for now . For the exhaust you could use that awesome blue color!