Blacktron "Pathfinder" a Renegade/Invader X-over MoC. I posted my first attempt last week it's gone through some fairly radical changes since (Full Gallery Imgr link in comments). Let me know your thoughts. :
LEGO 6954 Renegade Set Parts Inventory and Instructions - LEGO Reference Guide
LEGO Blacktron Renegade from 1987! set 6954 - YouTube
LEGO Blacktron Renegade Review! Set 6954 - YouTube