150 HP LA 318 - vs - 230 HP Magnum 318

If you want to notice a difference from what you have now get a 360/5.9. What you'll notice is the extra torque at all RPMs. The LA 360 (pre- '93) would be a bit more straight forward of a swap. The Magnums are great and I love them but I'm a keep it simple kinda guy.

Don't worry about the big difference in peak HP numbers, it is only rated at a specific RPM. You will NOT notice a 25% difference in performance between an LA318 & a 5.2L Magnum if they have similiar intake and exhaust.

So my advice is keep looking for a LA 360.