i have a ae92 seca like most people out there, its got the carby 4afc running, and basically its on its last legs, I'm debating as to whether or not to chuck a new, efi engine, such as the silvertop 20v into it. yet I'm wondering if the price of converting a carby car to fuel efi is worth the cost? i know there is the issue of wiring and the like. so i wasnt sure if its going to be cheaper to buy a seca sx and just chucking the 20v into that, which would be the most cost effective option? i was also thinking about placing an 'e58?" gearbox in, as i heard it gives you front lsd, not sure if thats true, any help would be greatly appreciated, thanks