i know you guys have mad topics on this but i have most of the money to get this swap trying to deciding which to get a b20 or ls and im trying to get alot of torque out of these engines which one is the best???

 

well, there the same engines, except the b20 has bigger bore which will have more torque.

 

b20 has a gsr oil pump (better)
b18 has stronger sleeves (better)
b20 has a 84mm bore
b18 has a 81mm bore
both blocks externally are almost identical other then the block stamp

other then that they are almost identical.

The b20 will make more torque, 2 liters vs 1.8.