Best swap
 

i want your opinion on these swaps
B18A block with B18B head running low comp and t3/t4 turbo with built internals.

B18C all NA

or LS/Vtec with a B18A block and a GSR head?

how hard is obd-0 to obd-1

You can just buy the OBD conversion from Skunk2 I do believe (correct me if I'm wrong though)
And
If your just concerend with speed. Nothing else.
LS/VTEC Turbo.

Boomslang has really really nice harnesses for less than skunk2

ah so if you drop a b18c5 into a rex all you need is a B series trans cable, hasport b series mounts, and OBD-2 conversion? i thought i would need axles and everything, and can somone explain all teh OBD $hit, i dont get any of it?????

OBD is On Board Diagnostics.
Basically from what I understand. Emissions and shit.

u dont need skunk 2 conversion there are knock offs for 100 dollers i bought one acctually for my swap Import-palace.com not a bad place...