I'll go with my standard: For a street car the weber 32/36, header, dual valve springs and a street cam should work well. I'd estimate 90-95 HP. Stocker was 78-80 HP so that's pretty good. Throw some sway bars on , good dampers / shocks , 175/60 13's better brake pads or even fab some plates to mount Wilwood calipers and it will make for a super cheap and fun run about.........otherwise put in a twin turbo Z motor , huge brakes near race suspension cuz if your gonna make it a money pit it should be scary stupid fast................Seriously I wrestle with this all the time; make my 1200 wazoo fast or keep it fun, cheap and reliable. End of the day I always decide that if I want a super fast car I should just go back to the single seat race car and learn not to whine about the cost.

For me Datsun is about low bucks fun.

Tom